sarpe.cpp: In function 'int main()': sarpe.cpp:50: warning: unused variable 'y' sarpe.cpp:57: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result sarpe.cpp:58: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result sarpe.cpp:63: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result sarpe.cpp:69: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result sarpe.cpp:50: warning: 'x1' may be used uninitialized in this function sarpe.cpp:50: warning: 'x2' may be used uninitialized in this function sarpe.cpp:50: warning: 'y1' may be used uninitialized in this function sarpe.cpp:50: warning: 'y2' may be used uninitialized in this function