Compilare: user.cpp: In function ‘int nrinsule(int)’: user.cpp:34:15: warning: suggest explicit braces to avoid ambiguous ‘else’ [-Wparentheses] if(a[i][j]==x and copie[i][j]==0) ^ user.cpp: In function ‘int main()’: user.cpp:50:9: warning: unused variable ‘i’ [-Wunused-variable] int i,j; ^ user.cpp:50:11: warning: unused variable ‘j’ [-Wunused-variable] int i,j; ^