Compilare: main.cpp: In function 'int main()': main.cpp:16:25: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d",&cer); ^ main.cpp:21:27: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d",&n); ^ main.cpp:24:34: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d",&v[i]); ^ main.cpp:36:43: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d%lld%lld",&n,&p1,&p2); ^ main.cpp:39:34: warning: ignoring return value of 'int fscanf(FILE*, const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] fscanf(in,"%d",&v[i]); ^ main.cpp:112:17: warning: 'rez1' may be used uninitialized in this function [-Wmaybe-uninitialized] fprintf (out,"%lld",rez1-rez2); ~~~~~~~~^~~~~~~~~~~~~~~~~~~~~~ main.cpp:112:17: warning: 'rez2' may be used uninitialized in this function [-Wmaybe-uninitialized]