Question

In C : Write a program that replaces words in a sentence. The input begins with an integer indicating the number of word replacement pairs (original and replacement) that follow. The next line of input begins with an integer indicating the number of words in the sentence that follows. Any word on the original list is replaced.

You can assume the original words are unique. For coding simplicity, follow each output word by a space, even the last one.

Hint: For words to replace, use two vectors: One for the original words, and the other for the replacements.

Your program must define and call the following function that returns index of word's first occurrence in wordList. If not found, then the function returns -1.
int FindWordInWordList(vector wordList, string wordToFind)

Answer 1

If you have any doubts, please give me comment...

#include<iostream>

#include<vector>

using namespace std;

int FindWordInWordList(vector<string> wordList, string wordToFind);

int main(){

int n1, n2;

vector<string> wordList, replaceList;

string temp;

cin>>n1;

for(int i=0; i<n1; i++){

cin>>temp;

wordList.push_back(temp);

cin>>temp;

replaceList.push_back(temp);

}

cin>>n2;

for(int i=0; i<n2; i++){

cin>>temp;

int pos = FindWordInWordList(wordList, temp);

if(pos==-1)

cout<<temp;

else

cout<<replaceList[pos];

if(i!=n2-1)

cout<<" ";

}

cout<<endl;

return 0;

}

int FindWordInWordList(vector<string> wordList, string wordToFind){

for(int i=0; i<wordList.size(); i++){

if(wordList[i]==wordToFind)

return i;

}

return -1;

}