bloc.cpp: In function 'int main()': bloc.cpp:26: warning: suggest parentheses around '&&' within '||' bloc.cpp:12: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result bloc.cpp:15: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result bloc.cpp:11: warning: 'dr' may be used uninitialized in this function bloc.cpp:11: warning: 'st' may be used uninitialized in this function