python/RuMenJingDian/Others/swap.cpp

#include<stdio.h>

void swap(int a, int b) {
    int t = a;
    a = b;
    b = t;
}

int main() {
    int a = 3, b = 4;
    swap(3, 4);
    printf("%d %d\n", a, b);
    return 0;
}