grad1.cpp: In function 'int main()': grad1.cpp:15: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result grad1.cpp:17: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result grad1.cpp:11: warning: 'poz' may be used uninitialized in this function