Write a C++ Program that uses: Strings Passing Strings to functions Files Input
ID: 3778946 • Letter: W
Question
Write a C++ Program that uses: Strings Passing Strings to functions Files Input and output.
Project Requirements: Write a function called removeRepeats that, given a string, removes any repeated letters and returns a new string.
Write a main method that reads words (strings) from a file and writes the new strings (no repeated letters) to another file.
Several options are left for the programmer to determine: Use of either c-string(char arrays) or thestring class. Use of a container (array or vector) to store the strings. You can either store the strings in an array or vector - or just read and write without storage.
Explanation / Answer
#include<iostream>
#include<fstream>
#include<vector>
using namespace std;
string removeRepeats (string s){
string newstr;
for(int i=0; i<s.length(); i++){
bool flag = false;
for(int j=0; j<newstr.length(); j++){
if(newstr[j] == s[i]){
flag = true;
break;
}
}
if(!flag){
newstr = newstr + s[i];
}
}
return newstr;
}
int main() {
ifstream inputFile;
inputFile.open("input.txt");
ofstream outputFile;
outputFile.open ("output.txt");
string s;
if (inputFile.is_open()) {
while (!inputFile.eof()) {
inputFile >> s;
string newstr = removeRepeats(s);
outputFile << newstr<<" ";
}
}
inputFile.close();
outputFile.close();
cout<<"File has been generated"<<endl;
return 0;
}
output:
sh-4.2$ g++ -std=c++11 -o main *.cpp
sh-4.2$ main
File has been generated
input.txt
This is suresh murapaka. Welcome to c++ programming language.
output.txt
This is sureh murapk. Welcom to c+ progamin langue.
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