Question

For my upcoming test, these are examples of code we might have to write. Any help with these would be very beneficial including notes

1. Code that you might need to write in C++
   1. A function to print the first word in a string by finding the first space and printing the substring from 0 to just before the space

Answer 1

Code:

#include<iostream>
#include<string>
using namespace std;
int main(){
   string str;                                   //declared a string
   int i;                                       //declared loop variable
   cout<<"please enter the input string: ";   //prompting user to enter the input string
   getline(cin,str);                           //predefined method to take string as input
   for(i=0;i<str.length();i++)                   // loop for checking the string for space
   {
       if (str[i]==' ')                       //condition for identifying first space
           break;
   }
   string first=str.substr(0,i);               //splitting the first word from the string
   cout<<first;                               //printing the first word in the string
   return 0;
}

Code Screenshot and output: