The most frequently used conditional statement is if. In its simplest form, the if statement takes a logical expression in a pair of parentheses and is immediately followed by the statement that is executed if the condition is true:
int i; std::cin >> i; if (i > 10) std::cout << "much too high!" << std::endl;
You can also use the else statement to catch occasions when the condition is false:
int i; std::cin >> i; if (i > 10) std::cout << "much too high!" << std::endl; else std::cout << "within range" << std::endl;
If you want to execute several statements, you can use braces ({}) to define a code block.
The condition is a logical expression and C++ will convert from numeric types to a bool, where 0 is ...
