Compilare: user.cpp: In function ‘int main()’: user.cpp:11:16: warning: unused variable ‘k’ [-Wunused-variable] int i,r,p, k, total = 0; ^ user.cpp:17:27: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%d%d",&r,&p); ^ user.cpp:20:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%f",&u); ^