#include <iostream> using namespace std; int main() { for(int i = 1; i <= 20; ++(i++)) { std::cout << i << std::endl; } return 0; }
Standard input is empty
prog.cpp: In function 'int main()': prog.cpp:5:32: error: lvalue required as increment operand for(int i = 1; i <= 20; ++(i++)) { ^
Standard output is empty