Compilare: user.cpp: In function ‘int main()’: user.cpp:79:28: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d %d",&n,&m); ^ user.cpp:81:50: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&a[i]),x[i].e=a[i],x[i].p=i; ^ user.cpp:83:50: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d",&b[i]),y[i].e=b[i],y[i].p=i; ^ user.cpp:147:26: warning: ‘okj’ may be used uninitialized in this function [-Wmaybe-uninitialized] else if(!oki && okj) ^ user.cpp:147:22: warning: ‘oki’ may be used uninitialized in this function [-Wmaybe-uninitialized] else if(!oki && okj) ^