scratchyourbrain

#include <stdio.h>
int main()
{
  int num1, num2, max;
  printf("Enter two positive integers: ");
  scanf("%d %d", &num1, &num2);
  max=(num1>num2) ? num1 : num2; /* maximum value is stored in variable max */
  while(1)                       /* Always true. */
  {
      if(max%num1==0 && max%num2==0)

scratchyourbrain

#include <stdio.h>
int main()
{
    int num1, num2, i, hcf;
    printf("Enter two integers: ");
    scanf("%d %d", &num1, &num2);
    for(i=1; i<=num1 || i<=num2; ++i)
    {
        if(num1%i==0 && num2%i==0)   /* Checking whether i is a factor of both number */
            hcf=i;

scratchyourbrain

#include <stdio.h>
int main()
{
  int count, n, t1=0, t2=1, display=0;
  printf("Enter number of terms: ");
  scanf("%d",&n);
  printf("Fibonacci Series: %d %d ", t1, t2); /* Displaying first two terms */
  count=2;    /* count=2 because first two terms are already displayed. */
  while (count<n)
  {

scratchyourbrain

#include <stdio.h>
int main()
{
    int n, i;
    printf("Enter an integer to find multiplication table: ");
    scanf("%d",&n);
    for(i=1;i<=10;++i)
    {
        printf("%d * %d = %d\n", n, i, n*i);
    }

scratchyourbrain

#include <stdio.h>
int main()
{
    int n, count;
    int factorial=1;
    printf("Enter an integer: ");
    scanf("%d",&n);
    if ( n< 0)
        printf("Error!!! Factorial of negative number doesn't exist.");
    else

scratchyourbrain

#include <stdio.h>
int main()
{
    char c;
    printf("Enter a character: ");
    scanf("%c",&c);
    if( (c>=65 && c<=90) || (c>=97 && c<=122))
       printf("%c is an alphabet.",c);
    else
       printf("%c is not an alphabet.",c);

scratchyourbrain

#include <stdio.h>
int main()
{
    float num;
    printf("Enter a number: ");
    scanf("%f",&num);
    if (num<0)      /* Checking whether num is less than 0*/
      printf("%.2f is negative.",num);
    else if (num>0)   /* Checking whether num is greater than zero*/
      printf("%.2f is positive.",num);

scratchyourbrain

#include <stdio.h>
int main()
{
      int year;
      printf("Enter a year: ");
      scanf("%d",&year);
      if(year%4 == 0)
      {
          if( year%100 == 0) /* Checking for a century year */
          {

scratchyourbrain

#include <stdio.h>
int main()
{
      float a, b, c;
      printf("Enter three numbers: ");
      scanf("%f %f %f", &a, &b, &c);
      if(a>=b && a>=c)
         printf("Largest number = %.2f", a);
      else if(b>=a && b>=c)
         printf("Largest number = %.2f", b);

scratchyourbrain

#include <stdio.h>
int main()
{
  char c;
  printf("Enter an alphabet: ");
  scanf("%c",&c);
  if(c=='a'||c=='A'||c=='e'||c=='E'||c=='i'||c=='I'||c=='o'||c=='O'||c=='u'||c=='U')
       printf("%c is a vowel.",c);
  else
       printf("%c is a consonant.",c);