#include <sstream> bool foo(){ std::stringstream ss("42"); int i; return ss >> i; } int main() {}
Standard input is empty
prog.cpp: In function 'bool foo()':
prog.cpp:6:15: error: cannot convert 'std::basic_istream<char>::__istream_type {aka std::basic_istream<char>}' to 'bool' in return
return ss >> i;
^
Standard output is empty