Compilare: user.cpp: In function ‘int main()’: user.cpp:8:9: warning: unused variable ‘a’ [-Wunused-variable] int a[11]={0},x,j,i,p=0,nr=0,mij; ^ user.cpp:8:21: warning: unused variable ‘j’ [-Wunused-variable] int a[11]={0},x,j,i,p=0,nr=0,mij; ^ user.cpp:8:25: warning: unused variable ‘p’ [-Wunused-variable] int a[11]={0},x,j,i,p=0,nr=0,mij; ^ user.cpp:9:15: warning: unused variable ‘nrr’ [-Wunused-variable] long long nrr=0; ^ user.cpp:13:22: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%c",&c); ^ user.cpp:18:25: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f,"%c",&c); ^