strcmp() not returning what it should return

Question

Basically I want to create a program that would have potential questions that might be in my upcoming exam in Digital Systems.

#include <stdio.h>
#include <string.h>
int main() {
    char input1[600];
    printf("What is the set of available registers?");
    scanf("%s", &input1);

    if(strcmp(input1, "registers, memory, hard disc") == 0){
        printf("Good job! You got it right");
    }
    else {
        printf("Wrong answer!");
    }

So whenever I type "registers, memory, hard disc" when I'm asked it returns 1 instead of 0. I cannot see the problem. I am kind of new to C so sorry if it is a silly question.

Answer 1

As already said in the comments, scanf() with "%s" stops conversion at the first whitespace character. To read a whole line of text, use fgets():

#include <stddef.h>
#include <stdio.h>
#include <string.h>

// ...

char foo[100];
if(!fgets(foo, sizeof(foo), stdin))  // don't use sizeof on pointers
    ; // handle error                // for that purpose!

size_t length = strlen(foo);
if(length && foo[length - 1] == '\n')  // fgets also reads the newline character 
   foo[--length] = '\0';               // at the end of the line, this removes it.