Compilare: main.cpp: In function 'int main()': main.cpp:47:10: warning: this 'if' clause does not guard... [-Wmisleading-indentation] {if(interior(i - 1,j) && b[i - 1][j] == 0 && (a[i][j] & 1) == 0) ^~ main.cpp:49:13: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if' a[i + 1][j + 1] +=1; ^ main.cpp:66:16: warning: statement has no effect [-Wunused-value] ok == 1; ~~~^~~~