rj.cpp: In function 'int main()': rj.cpp:16: warning: unused variable 'l' rj.cpp:16: warning: unused variable 'col' rj.cpp:16: warning: unused variable 'lin' rj.cpp:21: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result rj.cpp:22: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result rj.cpp:24: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result rj.cpp:40: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result rj.cpp:16: warning: 'pix' may be used uninitialized in this function rj.cpp:16: warning: 'piy' may be used uninitialized in this function rj.cpp:16: warning: 'pfx' may be used uninitialized in this function rj.cpp:16: warning: 'pfy' may be used uninitialized in this function rj.cpp:16: warning: 'linn' may be used uninitialized in this function rj.cpp:16: warning: 'coll' may be used uninitialized in this function