用 C 风格编写的 C++ 程序不能用 C 编译器编译

C++ program written in C style doesn't compile with C compiler

我是一名学生,开始学习 C++,之前有一些 C 知识。我有一个用 C 风格编写的工作 C++ 代码,它有一个用于输入 doublestring 的重载函数:

#include "stdio.h"
#include "string.h"
#include "ctype.h"

const int STR_LEN = 7;
int try_to_input(double* real_number);
int try_to_input(char (*string)[STR_LEN]);//line 16

int main()
{
    return 0;
}

int try_to_input(double* real_number) {//line 35
    int attempts_for_input = 3;
    //stops when == 0
    while (attempts_for_input) {
        //if input unsuccessful
        if (scanf_s("%lf", real_number) == 0) {
            puts("Invalid input! Try again.");
            attempts_for_input--;
            //flush stdin
            int tmp;
            while ((tmp = getchar()) != EOF && tmp != '\n');
            //extra '\n' after that for some reason
        }
        else return 0;
    }
    return -1;
}

int try_to_input(char (*string) [STR_LEN] ) { //line 53
    int attempts_for_input = 3;

    while (attempts_for_input) {
        if (gets_s(*string, STR_LEN) == NULL) {
            puts("Invalid input! Try again.\n");
            attempts_for_input--;
            //flush stdin
            int tmp;
            while ((tmp = getchar()) != EOF && tmp != '\n');
        }
        else return 0;
    }
    return -1;

}

但是当我将其编译为 C 时,出现以下错误:

(16): warning C4028: 形式参数 1 与声明不同
(35): warning C4028: 形式参数 1 与声明不同
(53): error C2084: 函数 'int try_to_input(double *)' 已经有主体
(35): 注意:参见 'try_to_input' 之前的定义


可能是什么问题呢?我的超载有什么问题?

正如 Jonathon Reinhart 评论的那样,事实证明,C 语言根本不支持 重载函数

I have a working C++ code written in C style, that has an oveloaded function [..]

到此为止!

C 支持函数重载,因此会出现编译错误。在 Does C support overloading?

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