Compilare: user.cpp: In function ‘int main()’: user.cpp:40:16: warning: the address of ‘sir1’ will always evaluate as ‘true’ [-Waddress] if(sir1) ^ user.cpp:57:19: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(sir1[0]>='0' && sir1[0]<='9') ^ user.cpp:40:11: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(sir1) ^ user.cpp:33:15: warning: unused variable ‘timp_preparare’ [-Wunused-variable] int i,n=0,timp_preparare=0,sumat,poz,k=0; ^