c++ - 基本 C++ 练习(命令提示符不显示任何 cout。没有编译器错误)

Question

刚刚接触 C++ 编程。我必须做的练习:“在一家商店中，有 500 种产品由 ID、产品名称、品牌、货架(0 到 34)标识。使用局部变量实现两个功能:- 加载数据；- 找到大部分产品所在的货架。”这就是我所做的。(我用了 10 个而不是 500 个)。

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

class product {
public: 
    string ID, prod_name, brand;
    float price; 
    int shelf;
    void data_load(); 
    int freq_shelf();
};

product a[10];        

void data_load() {
    int i;
    cout << "Recording ten products" << endl;
        for(i=0; i<10; i++) {
        cout << "Id product "<<i<<":" << endl;
        cin >> a[i].ID;
        cout << "Name product "<<i<<":" << endl;
        cin >> a[i].prod_name;
        cout << "Brand product "<<i<<":" << endl;
        cin >> a[i].brand;
        cout << "Price product "<<i<<":" << endl;
        cin >> a[i].price;
        cout << "Shelf (shelves 0-34)"<<i<<":" << endl;
        cin >> a[i].shelf;
        if (a[i].shelf<0 || a[i].shelf>34) {
            cout << "I said 0 a 34" << endl;
         }
    }
}

int freq_shelf() {
int coor[2];     //first element should be the number of the shelf, second one how many times that shelf is found
int i, j, k, c;
int t[10]={0,0,0,0,0,0,0,0,0,0};     //kth-element indicates the number of presences of the ith-element      
for (k=0; k<10; k++) {
    for (i=0; i<10; i++) {
        for (j=0; i<10; j++) {
            if (a[i].shelf==a[j].shelf) {
                t[k]++; 
                }
           }
     }
}

int max=t[0];
for (c=1; c<10; c++) 
{
    if (t[c]>max) 
    {
        max=t[c];      //c should be the number of the shelf, max how many times that shelf is found
        coor[2]=coor[c, max];
        cout << "The most frequent shelf is "<<coor[1]<<". It is found "<<coor[2]<<" times." << endl;
return 0;
        }
    }
}

int main() 
{
void data_load();
int freq_shelf();
system("PAUSE");
return 0;
}

使用 Microsoft Visual C++ 2010，我在调试和编译时没有遇到任何错误，但命令提示符直接转到“按任意键继续”。任何人都可以解释为什么？感谢您的耐心等待和帮助。

Answer 1

您声明了一个函数而不是调用它；

改变

int main() 
{
void data_load();

到

int main() 
{
    data_load();