Compilare: main.cpp: In function 'void update(int, int, int, int, int)': main.cpp:66:1: warning: this 'else' clause does not guard... [-Wmisleading-indentation] else ^~~~ main.cpp:69:2: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'else' arb[poz] = concat(arb[poz * 2], arb[poz * 2 + 1]); ^~~