Question

Write a program that can remove spaces from an input string, find the indexes of a character within the string and replace that character with another character.

Here is an example input:

I am an input string
a b

The first line, "I am an input string" represents the input string. Please put it into a string variable using getline. In the second line "a b", a is the character that needs to be located within the input string, and b is the character that will replace a in the final output.

The output of the program for the above example is

No space output: Iamaninputstring
Searching for a
Found a at index 2
Found a at index 5
Replace finished, resulting string: I bm bn input string

The first step is to make a new string, then use this string to store the input string, but without spaces Then print this string in the format:

No space output: [no space string here]

Secondly, print "Searching for [char]" where [char] is the character that needs to be located within the input string. Then, using the original input string with spaces, for each match, output "Found [char] at index [index]" where [index] is the index that the character has been found at within the input string. Then replace that character within the string (b in the above example input). After all the replacements are finished, output

Replace finished, resulting string: [modified string here]

However, if no matches are found, instead of outputting the replaced results, output:

[char] was not found

Here is an example input and output with no matches input:

I am an input string
z b

output

No space output: Iamaninputstring
Searching for z
z was not found

#include <iostream>
#include <string>

using namespace std;

int main()
{

string str;

string str_no_space = "";

char to_find;

char to_replace;

return 0;
}

Answer 1

PLEASE REFER BELOW CODE

#include <iostream>
#include <string>

using namespace std;

int main()
{
    string str; //input string
    string str_no_space = ""; //output string with no space
    char to_find; //char to find
    char to_replace; //char to replace

    std::getline (std::cin,str); //reading line from console
    cin>>to_find>>to_replace; //reading characters from console

    //for each char in input string we are checking space and if found we ignore and copy all chars
    //to output string
    for(unsigned int i = 0; i < str.length(); i++)
    {
        if(str[i] != ' ')
        {
            str_no_space += str[i];
        }
    }
    //display output in format specified
    cout<<"No space output: "<<str_no_space<<endl;
    cout<<"Searching for "<<to_find<<endl;
    bool flag = false;
    //searching char in input string and printing it's position or otherwise display not found
    for(unsigned int i = 0; i < str.length(); i++)
    {
        if(str[i] == to_find)
        {
            cout<<"Found "<<to_find<<" at index "<<i<<endl;
            flag = true;
        }

    }
    if(!flag)
        cout<<to_find<<" was not found"<<endl;

        //replacing find char to replace char
    for(unsigned int i = 0; i < str_no_space.length(); i++)
    {
        if(str[i] == to_find)
            str[i] = to_replace;
    }
    cout<<"Replace finished, resulting string: "<<str<<endl;
    return 0;
}

PLEASE REFER BELOW OUTPUT