Compilare: user.cpp: In function ‘int main()’: user.cpp:9:12: warning: unused variable ‘x’ [-Wunused-variable] int n, x, suma=0; ^ user.cpp:10:27: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin , "%d", &n); ^ user.cpp:13:40: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(fin , "%d", &lungime[i]); ^