Question

You may notice that the function strchr in the <cstring> library searches for a character within a string, and returns the memory address (pointer) to where that character first occurs.

1.) Write your own version of the strchr function, int findchr( char text[ ], char target) , which returns the index of the first occurrance of the character target if it occurs within the string text. If target does not occur within the string, a -1 is to be returned.

2.) Write a main that tests your function by:

* declaring a char array

* prompting the user for a string and reading it into the array (thus creating a C string). The user string may contain blanks

* printing out the stored C-string

*prompting the user for a character to be searched for within the string

* call your function to determine if the character is in the string, and output a message to that effect

Answer 1

Code

#include<iostream>
using namespace std;

int findchr(char text[],char target)
{
   int p=-1;
   for(int i=0;i<strlen(text);i++)
    {
        if(text[i]==target)
            return i;
    }
    return -1;
}
int main()
{
    char s[100],t;
    cout<<"Enter the string\n";
    gets(s); //input the string
    cout<<"Entered string is: "<<s;
    cout<<"\nEnter the target character \n";
    cin>>t; //input the target
    int p=findchr(s,t);
    cout<<"Index of the target is "<<p;
    return 0;
}

Terminal Work

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