tom.cpp: In function 'int main()': tom.cpp:20: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result tom.cpp:21: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result tom.cpp:26: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result tom.cpp:49: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result tom.cpp:18: warning: 'startxt' may be used uninitialized in this function tom.cpp:18: warning: 'startyt' may be used uninitialized in this function tom.cpp:18: warning: 'startxj' may be used uninitialized in this function tom.cpp:18: warning: 'startyj' may be used uninitialized in this function