C, why does the following program press "Enter", that is, the carriage return program does not end?

1 /*************************************************************************2 > File name:system.c3 > Author:Mr.Yang4 > Purpose: Demo system () function5 > Created time:2017 May 19 Friday 19:29 17 seconds6  ************************************************************************/7 8#include <stdio.h>9#include <stdlib.h>Ten  One Charinput[ +]; A  - intMainvoid) - { the          while(1) -         { -printf"Input The Desire system Command,blank to exit:"); -Fgets (Input, +, stdin); +                 if(input[0] ==' /')//detection is NULL character, if yes, exit program directly, but run on Linux do not quit?  -                 { +Exit0); A                 } at                 Else -                 { - system (input); -                 } -         } -  in         return 0; -}

C, why does the following program press "Enter", that is, the carriage return program does not end?