#include宏扰int main(){int 乱凳x,y; scanf("%d%d",&x,&y); printf("(x+y)/2=%d\n", 哗绝旅(x+y)/2); printf("(x+y)/(x-y)=%g\n", (float)(x+y)/(x-y)); printf("(x+y)*(x-y)=%d\n", (x+y)*(x-y)); return 0;}
