Swap two numbers – without using third Variable

#include <stdio.h>
/*
Swap two numbers @kodingkeys@keycomputer
*/
int main()
{
int num1, num2;

printf(“Enter two numbers to swap ::”) ;
scanf(“%d%d”,&num1, &num2);

num1= num1 + num2;
num2 = num1 – num2;
num1 = num1 – num2;

printf(“Swapped numbers %d – %d”,num1, num2) ;

return 0;
}

Output:

Enter two numbers to swap ::11
12
Swapped numbers 12 – 11

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