Compilare: user.cpp: In function ‘bool c(a, a)’: user.cpp:24:26: warning: suggest parentheses around assignment used as truth value [-Wparentheses] else if (x.leng = y.leng) ^ user.cpp: In function ‘int main()’: user.cpp:59:35: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = 0; i < legaturi[1].size(); i++) ^ user.cpp:86:37: warning: comparison between signed and unsigned integer expressions [-Wsign-compare] for (i = 0; i < legaturi[y].size(); i++) ^ user.cpp: In function ‘bool c(a, a)’: user.cpp:35:1: warning: control reaches end of non-void function [-Wreturn-type] } ^