common c programs asked in interview code example

Example: sample c programs for interview

/*C program to convert number from decimal to binary*/
 
#include <stdio.h>
 
int main()
{
    int     number,cnt,i;
    int     bin[32];
 
    printf("Enter decimal number: ");
    scanf("%d",&number);
 
    cnt=0;              /*initialize index to zero*/
    while(number>0)
    {
        bin[cnt]=number%2;
        number=number/2;
        cnt++;
    }
 
    /*print value in reverse order*/
    printf("Binary value is: ");
    for(i=(cnt-1); i>=0;i--)
        printf("%d",bin[i]);
 
    return 0;
}