tom.cpp: In function 'int main()': tom.cpp:15: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result tom.cpp:17: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result tom.cpp:19: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result tom.cpp:13: warning: 't1' may be used uninitialized in this function tom.cpp:13: warning: 't2' may be used uninitialized in this function tom.cpp:13: warning: 'j1' may be used uninitialized in this function tom.cpp:13: warning: 'j2' may be used uninitialized in this function