tom.cpp: In function 'int main()': tom.cpp:56: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result tom.cpp:54: warning: 'lt' may be used uninitialized in this function tom.cpp:54: warning: 'ct' may be used uninitialized in this function tom.cpp:54: warning: 'lj' may be used uninitialized in this function tom.cpp:54: warning: 'cj' may be used uninitialized in this function