C ++如何将数组中的字符串替换为另一个字符串 [英] c++ how to replace a string in an array for another string

问题描述

我正在尝试一个使用数组的短代码，我基本上想在调用函数WordReplace时替换仇恨一词，但我会继续打印相同的东西:

I am trying a short code that uses an array, I basically want to replace the word hate for love when I call my function WordReplace but I keep printing the same thing:

我不爱c ++ 我不喜欢c ++

I don't love c++ I don't love c++

我尝试了不同的方法，但是我不确定哪里出了问题

I have tried different things but I am not sure what is wrong

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

void WordReplace(string*x, int start, int end, string g, string w)
{
   for (int z = start; z <= end; z++)
   {
      if (x[z] == g)
         x[z] == w;

      cout << x[z]<<" ";
   }
}

int main()
{
   string x[4] = {"I", "don't", "hate", "c++"};

   for (int i = 0; i < 4; i++)
   {
      cout << x[i] << " ";
   }
   cout << endl;

   WordReplace(x, 0, 3, "hate", "love");

   cout << endl;

   return 0;
}

推荐答案

如果要为变量分配新值，则需要以下语法:

If you want to assign a new value to a variable you need the following syntax:

myVar = myValue;

这会将myVar的值更改为myValue.

This will change the value of myVar to myValue.

此构造:

myVar == myValue

是一个比较，被视为布尔值，因为它返回true(如果myVar等于myValue)和False(如果它们不相等).该构造不会更改myVar或myValue的值.

is a comparison and is treated as a bool, since it returned true(if myVar equals myValue) and False (if they are not equal). The construction doesn't change the value of myVar or myValue.

根据您的情况，按照Igor的建议，您需要将x[z] == w替换为x[z] = w

In your case you need to replace x[z] == w by x[z] = w, as suggested by Igor

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