Compilare: user.cpp: In function ‘int main()’: user.cpp:42:31: warning: variable ‘c’ set but not used [-Wunused-but-set-variable] int contor = 1, a, b, c; ^ user.cpp:17:38: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d %d %d", &v, &n, &k); ^ user.cpp:19:31: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d", &s[i]); ^