Eroare de compilare: user.cpp: In function 'long int gcd(long int, long int, long int&, long int&)': user.cpp:12: error: invalid initialization of reference of type 'long int&' from expression of type 'int' user.cpp:5: error: in passing argument 3 of 'long int gcd(long int, long int, long int&, long int&)' user.cpp: In function 'int main()': user.cpp:25: warning: format '%i' expects type 'int*', but argument 3 has type 'long int*' user.cpp:28: warning: unknown conversion type character 0x20 in format user.cpp:28: warning: unknown conversion type character 0x20 in format user.cpp:28: warning: conversion lacks type at end of format user.cpp:28: warning: too many arguments for format user.cpp:33: warning: unknown conversion type character 0x20 in format user.cpp:33: warning: unknown conversion type character 0xa in format user.cpp:33: warning: too many arguments for format