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C Program to swap two numbers using pointers and function.

C Program to swap two numbers using pointers and function.  



#include <stdio.h>

void swap(int *a,int *b);


int main()

{
  int num1=5,num2=10;


  swap(&num1,&num2);
       /* address of num1 and num2 is passed to swap function */

  
  printf("Number1 = %d\n",num1);
  printf("Number2 = %d",num2);
  

  return 0;
}


void swap(int *a,int *b)

{
 /* pointer a and b points to address of num1 and num2 respectively */
  int temp;
  temp=*a;
  *a=*b;
  *b=temp;
}




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