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C语言在不增加第三个变量的情况下互换整形值思路&代码1、常规方法就是新增临时变量，代码#include <stdio.h>int main(){ int a = 3; int b = 4; printf("交换前a和b:\n"); printf("a = %d\n", a); printf("b = %d\n", b); int temp = 0; //交换 temp = a; a = b; b =