Codeup: word replacement

Title address ：http://codeup.hustoj.com/problem.php?cid=100000580&pid=3
(codeup Changed places ,《 Algorithm notes 》 The above is invalid ）

Specific ideas can be seen in the notes , Here is an important question ：
getline(cin,s) Sometimes you will assign empty input to s, To avoid this problem, just write ：

while(getline(cin,sentence)){
    
       // prevent geiline Convulsion 
       if(sentence.empty())continue;

Here's what you can do ac Code for ：

#include<iostream>
using namespace std;
bool findWord(char words[][101],string s,int r){
    
    // Compare whether the word is s
    int s_len=s.length();
    int word_len=0;
    int count=s_len;//count Reduced to 0 explain s After comparison 
    for(int i=0;i<s_len;++i){
    
        // There is a position character that is not aligned and returns false
        if(words[r][i]=='\0' || words[r][i]!=s[i])return false;
        else --count;
    }
   // cout<<count<<endl;
    // The string to be replaced has not been deducted or the word has not been compared , return false
    if(count>0 || words[r][s_len]!='\0')return false;
    return true;
}
void replaceWord(char words[][101],string s,int r){
    
    int len=s.length();
    for(int i=0;i<len;++i){
    
        words[r][i]=s[i];
    }
    words[r][len]='\0';
}
int main(){
    
    string sentence,beReplaced,newword;
    while(getline(cin,sentence)){
    
       // prevent geiline Convulsion 
       if(sentence.empty())continue;
        cin>>beReplaced>>newword;
        // Initialize the word storage two-dimensional array as all terminators .r and c Corresponding rows and columns 
        char words[101][101]={
    '\0'};int r=0,c=0;
        int sentence_len=sentence.length();
        // Store words 
        for(int i=0;i<sentence_len;++i){
    
            if(sentence[i]!=' '){
    
                words[r][c++]=sentence[i];
            }
            else{
    
                // Move to the next line ,c Zeroing 
                words[r++][c]='\0';
                c=0;
            }
        }
        
        // Start changing words 
        for(int i=0;i<=r;++i){
    
            if(findWord(words,beReplaced,i)){
    
                // Meet the replacement conditions 
                replaceWord(words,newword,i);
            }
        }

        // Output 
        for(int i=0;i<=r;++i){
    
            if(words[r][0]=='\0')break;
            for(int j=0;words[i][j]!='\0';++j)
                cout<<words[i][j];
            cout<<' ';
        }
        // Reset three string variables 
        sentence.clear();
        cout<<'\n';
    }
    return 0;
}