Question

我正在尝试使用数组编写一个程序来存储6个测试的分数，然后在曲线上添加曲线，然后显示最终分数。我一直从Xcode得到一个错误，在for循环中有一个“指针与整数（'int'和double'*'）之间的比较”。

#include <iostream>
#include <iomanip>
using namespace std;

int main() {

    const int test = 5;    //sets the number of tests
    double score[test];      //array to hold each tests score
    double curve;           //curve for the tests
    double finalScore;      //The final test scores after the curve is applied

    //Input scores of the tests
    cout << "Enter the scores for \n";
    for (int test = 0; test < score; test++)
    {
         cout << "test #" << (test+1) <<": ";
         cin >> score[test];
    }

    //input the curve
    cout << "\nAll of these tests will have the same curve applied."
    << "\nEnter the curve: ";
    cin >> curve;

    //display the modified test scores
    cout << "\nHere are the curve test scores:\n";
    cout << fixed << showpoint << setprecision(2);

    for (int test = 0; test < score; test++)
    {
        finalScore = score[test] + curve;
        cout << "Test #" << (test + 1) << ": " << setw(7) << finalScore <<      endl;
    }

    return 0;
}

Answer 1

double score[5]定义了一个双精度数组，score表示该数组的第一个元素的地址;因此，它是一个指针，int test=0; test < score将积分值与指针值进行比较;因此错误/警告。

将nrOfTests与用于迭代测试的变量区分开来，例如test：

const int nrOfTests = 5;    //sets the number of tests
double score[nrOfTests];      //array to hold each tests score

....

for (int test = 0; test < nrOfTests; test++) { 
    ...
}

....

for (int test = 0; test < nrOfTests; test++) { 
    ...
}

Xcode错误：指针和double之间的比较

1 个答案: