摘要： 1 #include<stdio.h> 2 #include<stdlib.h> 3 int main() 4 { 5 int a = 1; 6 int b = 2; 7 a = a + b; 8 b = a - b; 9 a = a - b; 10 printf("a=%d\n", a); 11 阅读全文