Compilare: user.cpp: In function ‘int main()’: user.cpp:98:29: warning: format ‘%d’ expects argument of type ‘int’, but argument 2 has type ‘long long int’ [-Wformat=] printf("%d ",a[i][k]); ^ user.cpp: In function ‘int eval(int)’: user.cpp:53:30: warning: ‘y’ may be used uninitialized in this function [-Wmaybe-uninitialized] if(a[x][y]>0) ^ /tmp/ccbVUFJQ.o: In function `main': user.cpp:(.text.startup+0xcd): warning: the `gets' function is dangerous and should not be used.