Compilare: user.cpp: In function ‘int main()’: user.cpp:30:23: warning: format ‘%s’ expects argument of type ‘char*’, but argument 3 has type ‘char (*)[1000001]’ [-Wformat=] fscanf(f, "%s", &s); ^ user.cpp: In function ‘char opus(char)’: user.cpp:16:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ user.cpp: In function ‘int FindPos(int)’: user.cpp:22:1: warning: control reaches end of non-void function [-Wreturn-type] } ^ user.cpp: In function ‘int main()’: user.cpp:29:26: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d\n", &n); ^ user.cpp:30:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%s", &s); ^