6 回答#include <stdio.h> int main() { int a,s,d,f,g; a=x+y; s=x-y; d=x*y;f=x/y;g=x%y;printf("x+y=%d\n", a);printf("x-y=%d\n", s);printf("x*y=%d\n", d ); printf("x/y=%d\n", f);printf("x%y=%d\n", g);return 0;}

3 回答#include <stdio.h> int main() { char c = 'a'; int n = 'a'; //将c赋值给n float f = 'a'; //将c赋值给f double d = 'a'; //将c赋值给d printf("%d\n",n); printf("%f\n",f); printf("%lf\n",d); return 0; }

3 回答printf(%d\n",a+1)不改变原来的值

2 回答％d\n

3 回答为什么int a=100，printf(“%d\n”,a++)的输出不是101