Question

How to swap two numbers with simple math (+, -) in C

Answer 1

#include <stdio.h>
 
int main(void)
{
    int a = 3, b = 7;
    
    printf("a = %d b = %d\n", a, b);
    a = a + b;
    b = a - b;
    a = a - b;
    printf("a = %d b = %d\n", a, b);

    return 0;
}

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