Interchanging two numbers.

#include <stdio.h>
int main(void){
int num1,num2,num3; // declaring variables as integers

	printf("Enter the  two numbers  ");
scanf("%d %d",&num1,&num2);  // Enter two numbers
num3=num2; // Storing the value of num2 in num3
num2=num1; // Shifting the value of num1 to num2
num1=num3; // Assign the value of num3 ( original num2 value) to num1

printf(" Two numbers are %d,%d  " ,num1, num2); // printng outputs
return 0;
}