placare.cpp: In function 'int main()': placare.cpp:15: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result placare.cpp:16: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result placare.cpp:18: warning: ignoring return value of 'char* fgets(char*, int, FILE*)', declared with attribute warn_unused_result