Compilare: main.cpp: In function 'int main()': main.cpp:50:29: warning: unused variable 'v1' [-Wunused-variable] int i, j, minim, maxim, v1, v2, imin1, imin2, imax1 , imax2, val; ^~ main.cpp:50:33: warning: unused variable 'v2' [-Wunused-variable] int i, j, minim, maxim, v1, v2, imin1, imin2, imax1 , imax2, val; ^~ main.cpp:89:19: warning: 'imin2' may be used uninitialized in this function [-Wmaybe-uninitialized] val2 = (imin2 - 1) + (m - imax2); ~~~~~~~^~~~ main.cpp:88:19: warning: 'imin1' may be used uninitialized in this function [-Wmaybe-uninitialized] val1 = (imin1 - 1) + (n - imax1); ~~~~~~~^~~~ main.cpp:86:22: warning: 'minim' may be used uninitialized in this function [-Wmaybe-uninitialized] fout << minim << " "<< maxim <<" "; ^~~ main.cpp:89:29: warning: 'imax2' may be used uninitialized in this function [-Wmaybe-uninitialized] val2 = (imin2 - 1) + (m - imax2); ~~~^~~~~~~~ main.cpp:88:29: warning: 'imax1' may be used uninitialized in this function [-Wmaybe-uninitialized] val1 = (imin1 - 1) + (n - imax1); ~~~^~~~~~~~ main.cpp:86:36: warning: 'maxim' may be used uninitialized in this function [-Wmaybe-uninitialized] fout << minim << " "<< maxim <<" "; ^~~