Compilare: main.cpp: In function 'int main()': main.cpp:17:10: warning: statement has no effect [-Wunused-value] for(j-1;j<=n;j++) ~^~ main.cpp:31:13: warning: this 'else' clause does not guard... [-Wmisleading-indentation] else ^~~~ main.cpp:34:17: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'else' if(x<v[mid]) ^~