tom.cpp: In function 'int main()': tom.cpp:21: warning: unused variable 'l' tom.cpp:21: warning: unused variable 'c' tom.cpp:24: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result tom.cpp:29: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result tom.cpp:43: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result tom.cpp:21: warning: 'xt' may be used uninitialized in this function tom.cpp:21: warning: 'xj' may be used uninitialized in this function tom.cpp:21: warning: 'yt' may be used uninitialized in this function tom.cpp:21: warning: 'yj' may be used uninitialized in this function