Compilare: user.cpp: In function ‘void readFile()’: user.cpp:26:30: warning: format ‘%d’ expects argument of type ‘int*’, but argument 3 has type ‘lint* {aka long long int*}’ [-Wformat=] fscanf(f, "%d", &v[i]), sum += v[i]; ^ user.cpp:22:24: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d", &n); ^ user.cpp:26:44: warning: ignoring return value of ‘int fscanf(FILE*, const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] fscanf(f, "%d", &v[i]), sum += v[i]; ^