c代码小程序

#include <stdlib.h>
#include <stdio.h>
#include <math.h>
#include <time.h>

#define numOfQuestions 10

void main()
{
srand(1);
for(int i=0;i<numOfQuestions ;i++)
{
bool add = rand()%2;
char oper = '-';
if(add) oper = '+';
int a = rand()%100;
int b = rand()%100;
if(!add)
{
while(b>a)b = rand()%100;
}
printf("%d %c %d = ", a, oper, b);
int answer = 0;
scanf("%d", &answer);
bool correct = false;
if(add)
{
if(answer == (a + b)) correct = true;
}
else