C++ Examples
Dave Braunschweig
Counting
// This program demonstrates While, Do, and For loop counting using // user-designated start, stop, and increment values. // // References: // https://en.wikibooks.org/wiki/C%2B%2B_Programming #include using namespace std; int getValue(string name); void demonstrateWhileLoop(int start, int stop, int increment); void demonstrateDoLoop(int start, int stop, int increment); void demonstrateForLoop(int start, int stop, int increment); int main() { int start = getValue("starting"); int stop = getValue("ending"); int increment = getValue("increment"); demonstrateWhileLoop(start, stop, increment); demonstrateDoLoop(start, stop, increment); demonstrateForLoop(start, stop, increment); return 0; } int getValue(string name) { int value; cout << "Enter " << name << " value:" <> value; return value; } void demonstrateWhileLoop(int start, int stop, int increment) { cout << "While loop counting from " << start << " to " << stop << " by " << increment << ":" << endl; int count = start; while (count <= stop) { cout << count << endl; count = count + increment; } } void demonstrateDoLoop(int start, int stop, int increment) { cout << "Do loop counting from " << start << " to " << stop << " by " << increment << ":" << endl; int count = start; do { cout << count << endl; count = count + increment; } while (count <= stop); } void demonstrateForLoop(int start, int stop, int increment) { cout << "For loop counting from " << start << " to " << stop << " by " << increment << ":" << endl; for (int count = start; count <= stop; count += increment) { cout << count << endl; } }
Output
Enter starting value: 1 Enter ending value: 3 Enter increment value: 1 While loop counting from 1 to 3 by 1: 1 2 3 Do loop counting from 1 to 3 by 1: 1 2 3 For loop counting from 1 to 3 by 1: 1 2 3