Write a C++ program that will read a line of text and count the number of words in a text.

Answer: read the whole line with getline, then count each place where a word starts (a non-space character after a space or at the beginning).

#include <iostream>
#include <string>
using namespace std;

int main() {
    string line;
    int words = 0;
    bool inWord = false;

    cout << "Enter a line of text: ";
    getline(cin, line);

    for (char ch : line) {
        if (ch == ' ' || ch == '\t') {
            inWord = false;
        } else if (!inWord) {
            inWord = true;   // a new word starts here
            words++;
        }
    }

    cout << "Number of words = " << words << endl;
    return 0;
}

Explanation: getline reads spaces too (cin >> would stop at the first space). The flag inWord tracks whether we are inside a word. Each time a non-space character appears while inWord is false, a new word has begun, so the count increases. This handles extra spaces between words and at the start or end correctly, unlike simply counting spaces + 1.

Sample: " C++ is fun " gives Number of words = 3.