检查字符数组 - returns 每次都是相同的答案

Question

所以我一直在为一项作业编程——我应该创建一个程序来询问问题的数量、正确答案以及为 test.In 程序打分的答案写了，我总是得到相同的 return 分数值：4199676

谁能告诉我为什么我得到这个 return 值？非常感谢。

int main(){
int qnum = 1;
int counter;
int corr_counter;
char correct[10000];
char answer[10000];
while(qnum != 0){
    cout<<"Enter the number of questions on the test (0 to exit).\n";
    cin>>qnum;
    while(qnum < 0){
        cout<<"Please enter a valid number of questions.\n";
        cin>>qnum;
    }
    for(counter = 0; counter < qnum; counter++){
        cout<<"Enter the correct answer for question "<<counter<<". The answer can be A, B, C, D, or E.\n";
        cin>>correct[counter];
        toupper(correct[counter]);
        while(correct[counter] != 'A' && correct[counter] != 'B' && correct[counter] != 'C' && correct[counter] != 'D' && correct[counter] != 'E'){
            cout<<"Please enter either A, B, C, D, or E.\n";
            cin>>correct[counter];
            toupper(correct[counter]);
        }
    }
    for(counter = 0; counter < qnum; counter++){
        cout<<"Enter the student's answer for question "<<counter<<". The answer can be A, B, C, D, or E.\n";
        cin>>answer[counter];
        toupper(answer[counter]);
        while(answer[counter] != 'A' && answer[counter] != 'B' && answer[counter] != 'C' && answer[counter] != 'D' && answer[counter] != 'E'){
            cout<<"Please enter either A, B, C, D, or E.\n";
            cin>>answer[counter];
            toupper(answer[counter]);
        }
    }
    for(counter = 0; counter < qnum; counter++){
        if(answer[counter] == correct[counter]){
            corr_counter++;
        }
    }
    cout<<"Score: "<<corr_counter<<"\n";
    return(0);
}

}

Answer 1

您还没有初始化 corr_counter。

你在顶部声明了它，但你从未将它初始化为 0，这正是你想要做的。因此，您从一个未知的起点递增。

检查字符数组 - returns 每次都是相同的答案

Checking character arrays - returns same answer each time

c++

arrays

char