C++

8.6    The “while” Loop

The while loop executes a statement so long as a specified condition is met. The process is shown in Figure 8.3. You write it like this:

while( Condition ) Statement

For Condition and Statement, everything I mentioned about if applies. Therefore, the following example should pose no difficulty for you.

// https://godbolt.org/z/h466fYq4W#include <iostream>int main() {    /* Sum up from 1 to 100 */    int sum = 0;    int number = 1;    while(number <= 100)      // condition    {                         // block that is repeatedly executed        sum += number;        // for the result        number += 1;          // next number    }                         // end of the repeated block    std::cout << sum << std::endl;}  

Listing 8.12     The loop runs 100 times.

Before the loop block is executed, the condition is checked ...