Swap Values Without Using 3rd Variables : C Programming

For the above program, code goes like this :
/* Swapping values without using 3rd Variable */
#include<stdio.h>
main()
{
    int a,b;
    printf(" Enter two numbers :");
    scanf("%d %d",&a,&b);
    printf("\n The values of a & b before swapping values is %d & %d",a,b);
    a=a+b;
    b=a-b;
    a=a-b;
    printf("\n The values of a & b after swapping the values is %d & %d",a,b);
       
}

Output :

Compiler used : Dev CPP

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