Compilare: main.cpp: In function 'int cmmdc(int, int)': main.cpp:11:11: warning: suggest parentheses around comparison in operand of '&' [-Wparentheses] if(a&1==0 && b&1==0) ~^~~ main.cpp:11:21: warning: suggest parentheses around comparison in operand of '&' [-Wparentheses] if(a&1==0 && b&1==0) ~^~~ main.cpp:13:11: warning: suggest parentheses around comparison in operand of '&' [-Wparentheses] if(a&1==0) ~^~~ main.cpp:15:11: warning: suggest parentheses around comparison in operand of '&' [-Wparentheses] if(b&1==0) ~^~~ main.cpp:19:18: warning: left operand of comma operator has no effect [-Wunused-value] return (a, b-a); ^ main.cpp: In function 'int main()': main.cpp:24:34: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("cmmdc.in","r",stdin); ^ main.cpp:25:36: warning: ignoring return value of 'FILE* freopen(const char*, const char*, FILE*)', declared with attribute warn_unused_result [-Wunused-result] freopen("cmmdc.out","w",stdout); ^