编辑代码

#include <stdio.h>
#include <stdlib.h>
#include <time.h>
int main() {
    srand(time(0));
    int a = 0;
    int b = 0;
    int i = 0;
    int an = 0;
    int right = 0;
    int wrong = 0;
    for(i = 0; i < 5;i++) {
        a = rand() % 100;
        b = rand() % 100;
        printf("%d + %d = \n", a, b);
        scanf("%d", &an);
        if(an != a + b) {
            printf("wrong\n");
            wrong = wrong + 1;
        } else {
            printf("right\n");
            right = right + 1;
        }
    }
    printf("all:5 questions\n");
    printf("right:%d\n", right);
    printf("wrong:%d\n", wrong);
    return 0;
}