Compilare: main.cpp: In function 'int main()': main.cpp:6:23: warning: unused variable 'm' [-Wunused-variable] int a[100][100],n,m,i,j,k,psus[100][100],pst[100][100],nr,w,lin1,lin2,col1,col2,q,maxi; ^ main.cpp:44:54: warning: 'col2' may be used uninitialized in this function [-Wmaybe-uninitialized] if(w==3) g<<lin1<<" "<<col1<<" "<<lin2<<" "<<col2; ^ main.cpp:44:34: warning: 'col1' may be used uninitialized in this function [-Wmaybe-uninitialized] if(w==3) g<<lin1<<" "<<col1<<" "<<lin2<<" "<<col2; ^~~ main.cpp:44:45: warning: 'lin2' may be used uninitialized in this function [-Wmaybe-uninitialized] if(w==3) g<<lin1<<" "<<col1<<" "<<lin2<<" "<<col2; ^~~ main.cpp:44:23: warning: 'lin1' may be used uninitialized in this function [-Wmaybe-uninitialized] if(w==3) g<<lin1<<" "<<col1<<" "<<lin2<<" "<<col2; ^~~