C++ 编译器错误："没有匹配的调用函数"，当使用 2-D 数组作为参数时

C++ Compiler Error: "No matching function for call", when using a 2-D array as an argument

本文关键字：2-D 数组 参数 调用 错误 编译器 C++ 函数      更新时间：2023-10-16

我正试图从main.cpp中调用一个单独.cpp文件中的函数（称为closestPair），使用[5][10]2D数组作为参数。

呼叫：

extern const unsigned int vSize = 10;
[...]
double input[5][10] = {{0.595500, 0.652927, 0.606763, 0.162761, 0.980752, 0.964772, 0.319322, 0.611325, 0.012422, 0.393489},
                       {0.416132, 0.778858, 0.909609, 0.094812, 0.380586, 0.512309, 0.638184, 0.753504, 0.465674, 0.674607},
                       {0.183963, 0.933146, 0.476773, 0.086125, 0.566566, 0.728107, 0.837345, 0.885175, 0.600559, 0.142238},
                       {0.086523, 0.025236, 0.252289, 0.089437, 0.382081, 0.420934, 0.038498, 0.626125, 0.468158, 0.247754},
                       {0.969345, 0.127753, 0.736213, 0.264992, 0.518971, 0.216767, 0.390992, 0.242241, 0.516135, 0.990155}};
closestPair(input);

标题：

#include <iostream>
extern const unsigned int vSize;
double vectDistance (double a[], double b[]);
void closestPair(double bag[][vSize]);
#endif /* defined(__Cpp_Lab2__name1__) */

功能：

void closestPair(double bag[][vSize]){
 [...]
}

错误：

No matching function for call to 'closestPair'

我认为输入2D数组中的某些内容似乎与函数的参数列表相冲突，但我不确定问题出在哪里。我已经检查了所有地方，可能遗漏了一些愚蠢的内容。我该如何解决？

您应该使用：

const unsigned int vSize = 10;

在两个文件中。

这将确保closestPair的输入类型是double (*)[10]而不是double (*)[vSize]。

尝试使用类似的东西：

#include <iostream>
using namespace std;
void closestPair(double *input, size_t size) {
    for (size_t i = 0; i < size; ++i)
        cout << input[i] << endl;
}
int main() {
    size_t vSize = 10;
    double input[5][10] = {{0.595500, 0.652927, 0.606763, 0.162761, 0.980752, 0.964772, 0.319322, 0.611325, 0.012422, 0.393489},
                       {0.416132, 0.778858, 0.909609, 0.094812, 0.380586, 0.512309, 0.638184, 0.753504, 0.465674, 0.674607},
                       {0.183963, 0.933146, 0.476773, 0.086125, 0.566566, 0.728107, 0.837345, 0.885175, 0.600559, 0.142238},
                       {0.086523, 0.025236, 0.252289, 0.089437, 0.382081, 0.420934, 0.038498, 0.626125, 0.468158, 0.247754},
                       {0.969345, 0.127753, 0.736213, 0.264992, 0.518971, 0.216767, 0.390992, 0.242241, 0.516135, 0.990155}};
    for (size_t i = 0; i < 5; ++i)
        closestPair(input[i], vSize);
    return 0;
}

使用指针访问数组。（小心索引。）

其他选项：

void closestPair(double *input, size_t xSize, size_t ySize) {
    for (size_t i = 0; i < xSize; ++i) {
        for (size_t i = 0; i < ySize; ++i)
            cout << input[i] << endl;
    }
}
int main() {
    size_t xSize = 5;
    size_t ySize = 10;
    double input[5][10] = {{0.595500, 0.652927, 0.606763, 0.162761, 0.980752, 0.964772, 0.319322, 0.611325, 0.012422, 0.393489},
                       {0.416132, 0.778858, 0.909609, 0.094812, 0.380586, 0.512309, 0.638184, 0.753504, 0.465674, 0.674607},
                       {0.183963, 0.933146, 0.476773, 0.086125, 0.566566, 0.728107, 0.837345, 0.885175, 0.600559, 0.142238},
                       {0.086523, 0.025236, 0.252289, 0.089437, 0.382081, 0.420934, 0.038498, 0.626125, 0.468158, 0.247754},
                       {0.969345, 0.127753, 0.736213, 0.264992, 0.518971, 0.216767, 0.390992, 0.242241, 0.516135, 0.990155}};
    closestPair(input[0], xSize, ySize);
    return 0;
}
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