rj.cpp: In function 'int main()': rj.cpp:21: warning: unused variable 'l' rj.cpp:21: warning: unused variable 'c' rj.cpp:24: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result rj.cpp:29: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result rj.cpp:41: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result rj.cpp:21: warning: 'xr' may be used uninitialized in this function rj.cpp:21: warning: 'xj' may be used uninitialized in this function rj.cpp:21: warning: 'yr' may be used uninitialized in this function rj.cpp:21: warning: 'yj' may be used uninitialized in this function rj.cpp:21: warning: 'lf' may be used uninitialized in this function rj.cpp:21: warning: 'cf' may be used uninitialized in this function