C++ examples for Statement:for
Multiple initializations in a loop expression
#include <iostream> #include <iomanip> int main()//from w ww . ja v a2 s.c o m { unsigned int limit {}; std::cout << "This program calculates n! and the sum of the integers" << " up to n for values 1 to limit.\n"; std::cout << "What upper limit for n would you like? "; std::cin >> limit; // Output column headings std::cout << std::setw(8) << "integer" << std::setw(8) << " sum" << std::setw(20) << " factorial" << std::endl; for (unsigned long long n {1ULL}, sum {}, factorial {1ULL} ; n <= limit ; ++n) { sum += n; // Accumulate sum to current n factorial *= n; // Calculate n! for current n std::cout << std::setw(8) << n << std::setw(8) << sum << std::setw(20) << factorial << std::endl; } }