c++ - 你如何在 C++ 中比较多个字符串

Question

我正在处理一项硬件作业，但我卡在了这部分。 这是代码。

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <iostream>

using namespace std;


std::string stringSmallest(std::string s1, std::string s2, std::string s3, std::string s4, std::string s5 );


int main(int argc, char)
{
   std::string sSmallest = stringSmallest("hi", "wassup", "hello", "good","bye");
    printf("strings: %i", sSmallest); 
    std::cin.get();
    return 0;
}

std::string stringSmallest(std::string s1, std::string s2, std::string s3, std::string s4, std::string s5 ){
    std::string strSmallest = 0;
    if (strSmallest.compare(s1)<0)
        strSmallest = s1;

    if (strSmallest.compare(s2)<0)
        strSmallest = s2;

    if (strSmallest.compare(s3)<0)
        strSmallest = s3;

    if (strSmallest.compare(s4)<0)
        strSmallest = s4;

    if (strSmallest.compare(s5)<0)
        strSmallest = s5;

    return strSmallest;
}

我想做的是用最小的字符串创建一个字符串。 最小 = 最小(s1, s2, s3, s4, s5)

Answer 1

试试这个

std::string stringSmallest(std::string s1, std::string s2, std::string s3, std::string s4, std::string s5 )
{
std::string strSmallest = s1;

if (strSmallest.compare(s2)>0)
    strSmallest = s2;

if (strSmallest.compare(s3)>0)
    strSmallest = s3;

if (strSmallest.compare(s4)>0)
    strSmallest = s4;

if (strSmallest.compare(s5)>0)
    strSmallest = s5;

return strSmallest;
}