Compilare: main.cpp: In function 'int main()': main.cpp:48:38: warning: unused variable 'ni' [-Wunused-variable] int i, j, mx=0, lin, col, nrc=0, ni, nj, sum, maxx=0, z; ^~ main.cpp:48:42: warning: unused variable 'nj' [-Wunused-variable] int i, j, mx=0, lin, col, nrc=0, ni, nj, sum, maxx=0, z; ^~ main.cpp:48:59: warning: unused variable 'z' [-Wunused-variable] int i, j, mx=0, lin, col, nrc=0, ni, nj, sum, maxx=0, z; ^ main.cpp:49:10: warning: unused variable 'ok' [-Wunused-variable] bool ok; ^~ main.cpp:115:23: warning: 'col' may be used uninitialized in this function [-Wmaybe-uninitialized] g<<lin<<' '<<col<<' '<<maxx; ^~~ main.cpp:115:13: warning: 'lin' may be used uninitialized in this function [-Wmaybe-uninitialized] g<<lin<<' '<<col<<' '<<maxx; ^~~