Compilare: main.cpp: In function 'int main()': main.cpp:62:47: warning: unused variable 'coplin' [-Wunused-variable] 62 | int cer, n, val, srcval, fata, lin, col, i, coplin, copcol; | ^~~~~~ main.cpp:62:55: warning: unused variable 'copcol' [-Wunused-variable] 62 | int cer, n, val, srcval, fata, lin, col, i, coplin, copcol; | ^~~~~~