Compilare: main.cpp: In function 'int main()': main.cpp:49:11: warning: suggest explicit braces to avoid ambiguous 'else' [-Wparentheses] if(a.i<n) ^ main.cpp:67:11: warning: suggest explicit braces to avoid ambiguous 'else' [-Wparentheses] if(a.j<m) ^ main.cpp: In function 'int func(int, int, int)': main.cpp:23:1: warning: control reaches end of non-void function [-Wreturn-type] } ^