Compilare: main.cpp: In function 'int main()': main.cpp:19:7: warning: unused variable 'ok' [-Wunused-variable] { int ok = 0, q = 0, i; ^~ main.cpp:19:15: warning: unused variable 'q' [-Wunused-variable] { int ok = 0, q = 0, i; ^ main.cpp:19:22: warning: unused variable 'i' [-Wunused-variable] { int ok = 0, q = 0, i; ^ main.cpp:22:19: warning: variable 'wq' set but not used [-Wunused-but-set-variable] int st, dr, mid, wq; ^~ main.cpp:20:22: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&p); ^