Compilare: main.cpp: In function 'bool C()': main.cpp:41:7: warning: this 'if' clause does not guard... [-Wmisleading-indentation] if (ok==false) ^~ main.cpp:43:10: note: ...this statement, but the latter is misleadingly indented as if it is guarded by the 'if' q++; ^ main.cpp:46:41: warning: suggest parentheses around assignment used as truth value [-Wparentheses] else if (sir[q]='1' && sir [q+1]=='2') ^ main.cpp: In function 'int main()': main.cpp:62:10: warning: unused variable 'q' [-Wunused-variable] { int q=0; ^ main.cpp:60:9: warning: unused variable 'ok' [-Wunused-variable] bool ok; ^~ main.cpp: In function 'bool C()': main.cpp:53:1: warning: control reaches end of non-void function [-Wreturn-type] } ^