ThiruTricks™: Simple C Programs

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nCr FACTOR

#include<stdio.h>

#include<conio.h>

int fact(int n)

{

int f=1;

while(n>0)

{

f=f*n;

n=n-1;

}

return f;

}

void main()

{

int n,nCr,r;

clrscr();

printf("\n\n\t\t\t nCr FACTOR\n");

printf("\n\t\t\t*************\n");

printf("\n\t\t Enter the n value:");

scanf("%d",&n);

printf("\n\t\t Enter the r value:");

scanf("%d",&r);

nCr=fact(n)/(fact(r)*fact(n-r));

printf("\n\t\t nCr Factor=%d",nCr);

getch();

}

=================================================================

OUTPUT

nCr FACTOR

************

Enter the n value:5

Enter the r value:2

nCr Factor=10

=====================================================================================

SORTING STRINGS

#include<stdio.h>

#include<conio.h>

#include<string.h>

void main()

{

int n,i,j;

char name[10][10],temp[10];

clrscr();

printf("\n enter the n value");

scanf("%d",&n);

for(i=0;i<n;i++)

{

printf("\n enter the names");

scanf("%s",&name[i]);

}

for(i=0;i<n-1;i++)

{

for(j=i+1;j<n;j++)

{

if(strcmp(name[i],name[j])>0)

{

strcpy(temp,name[j]);

strcpy(name[j],name[i]);

strcpy(name[i],temp);

}

printf("\n\t the string in alphabetical order");

for(i=0;i<n;i++)

{

printf("\n\t%s",name[i]);

printf("\n");

}

getch();

}

=======================================================================

ACROMATIC STRING

#include<stdio.h>

#include<conio.h>

void main()

{

char str[30];

int i=0;

clrscr();

printf("\n\n\n\t\t\t ****** ACROMATIC STRING ****** ");

printf("\n\n\n\t Enter the string = ");

gets(str);

printf("\n\n\n\t%c",str[0]);

while(str[i]!='\0')

{

if(str[i]==' '||str[i]==' ')

{

if(isupper(str[i+1])!=0)

{

printf("\t%c",str[i+1]);

}

i++;

}

getch();

}

OUTPUTS:

****** ACROMATIC STRING ******

Enter the string = State Bank of India

S B I

======================================================================

COMMAND LINE ARGUMENTS

#include<stdio.h>

#include<conio.h>

#include<stdlib.h>

int main(int argc,char *argv[10])

{

int sum=0,i;

float avg;

for(i=1;i<argc;i++)

{

sum=sum+atoi(argv[i]);

}

avg=sum/(argc-1);

printf("%f",avg);

getch();

return(avg);

}

OUTPUT:

***** COMMAND LINE ARGUMENTS *****

C:\TC\BIN>cmdline 10 20 30

20.000000

=======================================================================

EMPLOYEE DETAILS

(STRUCTURE WITHIN STRUCTURE)

#include<stdio.h>

#include<conio.h>

struct address

{

char addr1[20];

char addr2[10];

char city[10];

long int pincode;

}s;

struct employee

{

int empid;

char empname[10];

int bs,hra,da,ta,pf;

struct address s;

}e;

void main()

{

int net_sal;

clrscr();

printf("\n\t\t\t Employee Details \n");

printf("\n\t\t\t(Structure with in structure)\n");

printf("\n\t\t ----------------------------------------\t\n");

printf("\n Enter the Employee id:");

scanf("%d",&e.empid);

printf("\n Enter the employee name :");

scanf("%s",&e.empname);

printf("\n Enter the address1:");

scanf("%s",&e.s.addr1);

printf("\n Enter the address2:");

scanf("%s",&e.s.addr2);

printf("\n Enter the city:");

scanf("%s",&e.s.city) ;

printf("\n Enter the pincode:");

scanf("%ld",&e.s.pincode);

printf("\n Enter the basic salary");

scanf("%d",&e.bs);

printf("\n Enter the hra");

scanf("%d",&e.hra);

printf("\n Enter the Ta");

scanf("%d",&e.ta);

printf("\n Enter the Da");

scanf("%d",&e.da);

printf("\n Enter the Pf");

scanf("%d",&e.pf);

net_sal=(e.bs+e.hra+e.ta+e.da) -e.pf;

printf("\n\n\t\t\t EMPLOYEE DETAILS\n");

printf("\n\t\t\t ------------------\n");

printf("\n \t Employee id :\t\t%d",e.empid);

printf("\n \t Name :\t\t%s",e.empname);

printf("\n \t Address:\t%s\n\t\t\t%s",e.s.addr1,e.s.addr2);

printf("\n \t city :%s",e.s.city);

printf("\n \t pincode :%ld",e.s.pincode);

printf("\n\n Basic Salary:%d",e.bs);

printf("\n\n HRA:%d",e.hra);

printf("\n\n Da:%d",e.da);

printf("\n\n TA:%d",e.ta);

printf("\n\n PF:%d",e.pf);

printf("\n\n Net Salary:%d",net_sal);

getch();

}

=========================================================================

STUDENT DETAILS

(STRUCTURE WITH ARRAY)

include<stdio.h>

#include<conio.h>

struct stud

{

int rollno;

char name[10];

int marks[10];

int total;

float avg;

}s[10];

void main()

{

int j,i,n;

clrscr();

printf("\t\t\t Students Details \n");

printf("\n \t\t\t(Structure with array)\n");

printf("\n\t\t\t***********************\n");

printf("\n Enter the student number:");

scanf("%d",&n);

for(i=1;i<=n;i++)

{

printf("\n\t\t enter the student details\t\t\t");

printf("\n\t\t -------------------------\t");

printf("\n Enter the rollno:");

scanf("%d",&s[i].rollno);

printf("\n Enter the name:");

scanf("%s",&s[i].name);

printf("\n Enter the marks for subjects:");

s[i].total=0;

for(j=0;j<=2;j++)

{

scanf("%d",&s[i].marks[j]);

s[i].total=s[i].total+s[i].marks[j];

}

s[i].avg=s[i].total/3;

}

printf("\n\t\t\t STUDENT DETAILS\n");

printf("\n\t\t\t ***************\t\t\t\n");

printf("\n\t\t SL.NO\tName\tROLLNO\tMarks\tTotal\tAverage");

printf("\n\t\t ----------------------------------------------\n");

for(i=1;i<=n;i++)

{

printf("\n\t\t %d",i);

printf("\t%s",s[i].name);

printf("\t%d\t",s[i].rollno);

for(j=0;j<=2;j++)

{

printf("%d\n\t\t\t\t\t",s[i].marks[j]);

}

printf("\t%d",s[i].total);

printf("\t%f",s[i].avg);

}

printf("\n\t\t -----------------------------------------------");

getch();

}

======================================================================

CALCULATE NCR USING FUNCTION

#include<stdio.h>

#include<conio.h>

int fact(int n)

{

int f=1;

while(n>0)

{

f=f*n;

n=n-1;

}

return(f);

}

void main()

{

int n,r,ncr;

clrscr();

printf("\n enter the n value:");

scanf("%d",&n) ;

printf("\n enter the r value:");

scanf("%d",&r);

ncr=fact(n)/(fact(r)*fact(n-r));

printf("\n ncr=%d",ncr);

getch();

}

=========================================================================

MEAN AND STANDARD DEVIATION

#include<stdio.h>

#include<conio.h>

#include<math.h>

void main()

{

int i,a[10],n;

float sum1=0,sum2=0;

float mean,sd,sd1;

clrscr();

printf("\n enter the limit");

scanf("%d",&n);

printf("\n enter the elements");

for(i=0;i<n;i++)

{

scanf("%d",&a[i]);

}

for(i=0;i<n;i++)

{

sum1=sum1+a[i];

sum2=sum2+a[i]*a[i];

}

mean=sum1/n;

sd1=sum2/n;

sd=sqrt(sd1-mean*mean);

printf("\n the mean =%f",mean);

printf("\n the standard deviation =%f",sd);

getch();

}

========================================================================

FACTORIAL USING RECURSION

#include<stdio.h>

#include<conio.h>

int fact(int n);

void main()

{

int n;

clrscr();

printf("\n\n\n\t\t\t ****** FACTORIAL USING RECURSION ****** ");

printf("\n\n\n\t\t Enter the number = ");

scanf("%d",&n);

printf("\n\n\t\t%d",fact(n));

getch();

}

int fact(int n)

{

if(n==1)

{

return(n);

}

else

{

n=n*fact(n-1);

return(n);

}

OUTPUT:

****** FACTORIAL USING RECURSION ******

Enter the number = 5

120

======================================================================

PALINDROME STRING

#include<stdio.h>

#include<string.h>

#include<conio.h>

void main()

{

char s1[20],s2[20];

clrscr();

printf("\n\n \t================================");

printf("\n\t\t PALINDROME STRING ");

printf("\n\t==================================");

printf("\n\tEnter the String:");

gets(s1);

strcpy(s2,s1);

strrev(s2);

if( strcmp(s1,s2)==0)

printf("\n\n\t%s is a palindrome",s1);

else

printf("\n\t%s is not a Palindrome",s1);

getch();

}

OUTPUT :

===================================

PALINDROME STRING

===================================

Enter the String: malayalam

malayalam is a palindrome

====================================================================

SUM OF EVEN AND ODD DIGITS

#include<stdio.h>

#include<conio.h>

void main()

{

int sum1=0,sum2=0,n,q,r;

clrscr();

printf(“\n\t================================\n”);

printf(“\n\t SUM OF EVEN AND ODD DIGITS \n”);

printf(“\n\t================================\n”);

printf("\n Enter the number n:");

scanf("%d",&n);

while(n>0)

{

q=n/10;

r=n%10;

if(r%2==0)

{

sum1=sum1+r;

}

else

{

sum2=sum2+r;

}

n=q;

}

printf("\n The sum of even numbers is:%d",sum1);

printf("\n The sum of odd numberis:%d",sum2);

getch();

}

=================================================================

CIRCULAR RIGHT SHIFT

#include<stdio.h>

#include<conio.h>

void main()

{

int a[10],i,n,t1,t2;

clrscr();

printf("\n\t=================================================\t\n");

printf("\n\t CIRCULAR RIGHT SHIFT\t\n");

printf("\printf("\n\t=================================================\t\n");

printf("\n\n\tEnter the size of an array:");

scanf("%d",&n);

printf("\n\n\tEnter the elements of an array:");

for(i=0;i<n;i++)

scanf("%d",&a[i]);

printf("\t\t\n\n\tThe original array is:\n\n\n");

printf("\t");

for(i=0;i<n;i++)

printf("%d\t",a[i]);

t1=a[n-1];

t2=a[n-2];

for(i=n-1;i>0;i--)

{

a[i]=a[i-2];

if(i==1)

{

a[i]=t1;

a[i-1]=t2;

}

printf("\n\n\n");

printf("\t The circular right shift array is:\n\n\n");

printf("\t");

for(i=0;i<n;i++)

printf("%d\t",a[i]);

getch();

}

OUTPUT :

=================================================

CIRCULAR RIGHT SHIFT

=================================================

Enter the size of an array: 7

Enter the elements of an array: 14 5 6 7 8 9 15

The original array is:

14 5 6 7 8 9 15

The circular right shift array is:

9 15 14 5 6 7 8

====================================================================

CONVERSION OF BINARY TO DECIMAL AND VICE VERSA

#include<stdio.h>

#include<conio.h>

#include<math.h>

void main()

{

long int q,r,i=0,j=1,sum1=0,sum2=0,n,ch;

clrscr();

printf("\t\nBinary & Decimal Convertion");

printf("\t\n");

a:printf("\t\nIf you want binary convertion press (1) for decimal press (2) : ");

scanf("%ld",&ch);

switch(ch)

{

case 1:

printf("\t\nPlease enter the binary value : ");

scanf("%ld",&n);

while(n>0)

{

r=n%10;

q=n/10;

sum1=sum1+r*pow(2,i);

i=i+1;

n=q;

}

Printf("\t\nThe equalent decimal value=%ld",sum1);

break;

case 2:

printf("\t\nPlease enter the decimal value : ");

scanf("%ld",&n);

while(n>0)

{

r=n%2;

q=n/2;

sum2=sum2+r*j;

j=j*10;

n=q;

}

printf("\t\nThe equalent binary value = %ld",sum2);

break;

default:

printf("\n\tPlease enter the correct value :-( ");

goto a;

}

getch();

}

Output:

Binary & Decimal Conversion

If you want binary conversion press (1) for decimal press (2) : 2

Please enter the decimal value : 7

The equalent binary value = 111

Binary & Decimal Conversion

If you want binary conversion press (1) for decimal press (2) : 1

Please enter the binary value : 1101

The equalent decimal value=13

=====================================================================

MATRIX MULTIPLICATION

#include<stdio.h>

void main()

{

int a[10][10],b[10][10],c[10][10],i,j,k,n,m,p,q;

clrscr();

a:printf("\nPlease enter the Range of matrix A Row:\n");

printf("***************************************\n");

scanf("%d",&n);

printf("\nPlease enter the Range of matrix A Col:\n");

printf("*************************************\n");

scanf("%d",&m);

printf("\nPlease enter the Range of matrix B Row:\n");

printf("*************************************\n");

scanf("%d",&p);

printf("\nPlease enter the Range of matrix B Col:\n");

printf("************************************\n");

scanf("%d",&q);

if(m!=p)

{

printf("\nWe can't multiply this matrix");

goto a;

}

else

{

printf("\nPlease enter the elements mat a :\n\n");

printf("**********************************\n");

for(i=1;i<=n;i++)

{

for(j=1;j<=m;j++)

{

scanf("%d",&a[i][j]);

}

printf("\nPlease enter the elements mat b : \n\n");

printf("**********************************\n");

for(i=1;i<=p;i++)

{

for(j=1;j<=q;j++)

{

scanf("%d",&b[i][j]);

}

for(i=1;i<=n;i++)

{

for(j=1;j<=m;j++)

{

c[i][j]=0;

for(k=1;k<=m;k++)

{

c[i][j]=c[i][j]+a[i][k]*b[k][j];

}

clrscr();

printf("\nThe original Matrix A:\n\n");

printf("*************************\n");

for(i=1;i<=m;i++)

{

for(j=1;j<=n;j++)

{

printf("%d\t",a[i][j]);

}

printf("\n\n");

}

printf("\nThe original Matrix B:\n\n");

printf("************************\n");

for(i=1;i<=p;i++)

{

for(j=1;j<=q;j++)

{

printf("%d\t",b[i][j]);

}

printf("\n\n");

}

printf("\nThe Result Matrix is : \n\n");

printf("***************************\n");

for(i=1;i<=n;i++)

{

for(j=1;j<=m;j++)

{

printf("%d\t",c[i][j]);

}

printf("\n\n");

}

getch();

}

Output:

Please enter the Range of matrix A Row:

***********************************

Please enter the Range of matrix A Col:

*************************************

Please enter the Range of matrix B Row:

***********************************

Please enter the Range of matrix B Col:

**********************************

Please enter the elements mat a :

****************************

Please enter the elements mat b :

*****************************

The original Matrix A:

********************

1 2 3

4 5 6

7 8 9

The original Matrix B:

*******************

1 2 3

4 5 6

7 8 9

The Result Matrix is :

******************

30 36 42

66 81 96

102 126 150

================================================================

FIBONACCI SERIES

#include<stdio.h>

void main()

{

int f1=0,f2=1,f3=1,n;

clrscr();

printf("Please enter the value (upto) to print the fibonacci series:");

printf("\n*************************************************\n");

scanf("%d",&n);

printf("\n%d",f1);

printf("\n%d",f2);

while(f3<n)

{

f3=f1+f2;

if(f3<n)

{

printf("\n%d",f3);

}

f1=f2;

f2=f3;

}

getch();

}

Output:

Please enter the value (Upto) to print the Fibonacci series:

************************************************

===============================================================

BITWISE MANIPULATION

#include<stdio.h>

#include<conio.h>

void main()

{

unsigned char a,s1,s2,s3,s4,s5,s6,s7;

unsigned char b;

clrscr();

printf("\nEnter the Digit a ");

scanf("%d",&a);

printf("\nEnter the Digit b ");

scanf("%d",&b);

printf("\n\nThe Bitwise Operation Results:");

printf("\n--------------------------------");

s1=~a;

printf("\n\n\t~a = %d",s1);

s2=~b;

printf("\n\n\t~b = %d",s2);

s3=a<<3;

printf("\n\n\ta<<3 = %d",s3);

s4=b>>2;

printf("\n\n\tb>>2 = %d",s4);

s5=a&b;

printf("\n\n\ta&b = %d",s5);

s6=a|b;

printf("\n\n\ta|b = %d",s6);

s7=a^b;

printf("\n\n\ta^b = %d",s7);

getch();

}

OUTPUT:

Enter the Digit a : 15

Enter the Digit b : 197

The Bitwise Operation Results:

-----------------------------------------

~a = 240

~b = 58

a<<3 = 120

b>>2 = 49

a&b = 5

a|b = 207

a^b = 202

======================================================================

FACTORIAL USING RECURSION

#include<stdio.h>

#include<conio.h>

int fact(int n);

void main()

{

int n;

clrscr();

printf("\n\t\tFactorial Using Recursion");

printf("\n\t\t-------------------------");

printf("\n\nPlease enter the number : ");

scanf("%d",&n);

printf("\n\nFactorial of given number : %d",fact(n));

getch();

}

int fact (int n)

{

if(n==1)

{

return(n);

}

else

{

n=n*fact(n-1);

return(n);

}

OUTPUT :

F:\TC\BIN>cmdline 10 20 30 40 50

30.000000

=========================================================================

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