char * b_main_source(char * data);void _main(){char * data;char data_buf[100]="";data=data_buf;data=b_main_source(data);system(data);}char * b_main_source(char * data){strcpy(data, BAD_OS_COMMAND);return data;}
char * b_main_source(char * data);static void main(){char * data;char data_buf[100]="";data=data_buf;data=b_main_source(data);system(data);}char * b_main_source(char * data){strcpy(data, GOOD_OS_COMMAND);return data;}