Compilare: user.cpp: In function ‘int main()’: user.cpp:58:26: warning: narrowing conversion of ‘i’ from ‘int’ to ‘char’ inside { } [-Wnarrowing] q.push({i, j}); ^ user.cpp:58:26: warning: narrowing conversion of ‘j’ from ‘int’ to ‘char’ inside { } [-Wnarrowing] user.cpp:68:23: warning: narrowing conversion of ‘(dirl[i] + lin)’ from ‘int’ to ‘char’ inside { } [-Wnarrowing] q.push({lin + dirl[i], col + dirc[i]}); ^ user.cpp:68:38: warning: narrowing conversion of ‘(dirc[i] + col)’ from ‘int’ to ‘char’ inside { } [-Wnarrowing] q.push({lin + dirl[i], col + dirc[i]}); ^ user.cpp:35:10: warning: unused variable ‘ch’ [-Wunused-variable] char ch; ^