pav.cpp: In function 'int main()': pav.cpp:14: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result pav.cpp:15: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result pav.cpp:16: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result pav.cpp: In function 'void DI(int, int, int, int)': pav.cpp:32: warning: 'd0x' may be used uninitialized in this function pav.cpp:32: warning: 'd0y' may be used uninitialized in this function