Compilare: main.cpp: In function 'int main()': main.cpp:6:19: warning: this 'for' clause does not guard... [-Wmisleading-indentation] #define FOR1(a,b) for(int a = 1; a <= b; ++a) ^ main.cpp:24:5: note: in expansion of macro 'FOR1' FOR1(i, g) v[i] = -1; v[0] = 0; ^~~~ main.cpp:24:27: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'for' FOR1(i, g) v[i] = -1; v[0] = 0; ^