Compilare: main.cpp: In function 'int main()': main.cpp:69:28: warning: unused variable 'i' [-Wunused-variable] int n, m, matrice[20][20],i,j,k,l,ok=1; ^ main.cpp:69:30: warning: unused variable 'j' [-Wunused-variable] int n, m, matrice[20][20],i,j,k,l,ok=1; ^ main.cpp:69:32: warning: unused variable 'k' [-Wunused-variable] int n, m, matrice[20][20],i,j,k,l,ok=1; ^ main.cpp:69:34: warning: unused variable 'l' [-Wunused-variable] int n, m, matrice[20][20],i,j,k,l,ok=1; ^ main.cpp:69:36: warning: unused variable 'ok' [-Wunused-variable] int n, m, matrice[20][20],i,j,k,l,ok=1; ^~