Compilare: main.cpp: In function 'int main()': main.cpp:55:18: warning: unused variable 'sl' [-Wunused-variable] int n, m, k, l, sl, sc, i, j, x, lin, col; ^~ main.cpp:55:22: warning: unused variable 'sc' [-Wunused-variable] int n, m, k, l, sl, sc, i, j, x, lin, col; ^~ main.cpp:55:32: warning: unused variable 'x' [-Wunused-variable] int n, m, k, l, sl, sc, i, j, x, lin, col; ^