Compilare: user.cpp: In function ‘int main()’: user.cpp:206:9: warning: unused variable ‘j’ [-Wunused-variable] int i, j, value; ^ user.cpp:206:12: warning: unused variable ‘value’ [-Wunused-variable] int i, j, value; ^ user.cpp:209:19: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%d\n", &t); ^ user.cpp:211:30: warning: ignoring return value of ‘int scanf(const char*, ...)’, declared with attribute warn_unused_result [-Wunused-result] scanf("%s\n%d\n", read, &p); ^