Compilare: main.cpp: In function 'int main()': main.cpp:18:9: warning: this 'else' clause does not guard... [-Wmisleading-indentation] else ^~~~ main.cpp:20:13: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'else' m[i * 2 + 1] = "11111111111111111111111111111111111111111111111110\n"; ^