C++ examples for Statement:for
Controlling a for Loop with Floating-Point Values
#include <iostream> #include <iomanip> int main()/*from ww w . ja va 2 s . co m*/ { const double pi { 3.14159265 }; // The famous pi const int perline {3}; // Outputs per line int linecount {}; // Count of output lines for (double radius {0.2} ; radius <= 3.0 ; radius += 0.2) { std::cout << std::fixed << std::setprecision(2) << " radius =" << std::setw(5) << radius << " area =" << std::setw(6) << pi * radius * radius; if (perline == ++linecount) // When perline outputs have been written... { std::cout << std::endl; // ...start a new line... linecount = 0; // ...and reset the line counter } } std::cout << std::endl; }