' backslash 0' does anyone know what the meaning of it in this case?

[vivid lark]

#include<stdio.h>
int main()
{
  long int T;
  scanf("%ld",&T);
  
  char str [1000];
    for(int i=0; i<T;i++){
      scanf("%s",&str);
      printf("Case #%ld: ",i+1);
      
        for(int j=0;str[j]!='\0';j++){
          printf("%ld",str[j]);
          if(str[j+1] !='\0'){
            printf("-");
          }
        }
      printf("\n");
    }
    return 0;
}```

[unkempt cape]

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[vivid lark]

' 0' does anyone know what the meaning of it in this case?

' backslash 0' does anyone know what the meaning of it in this case?

[magic gull]

It means the null character

Basically all characters have some number associated with them. The character with the number of 0 is the null character and usually represents the end of a string

[vivid lark]

How about in my code?

[vivid lark]

Why the null character should be there?

[upper shard]

Strings are null terminated.

[magic gull]

It how code which loops over the characters of a string know when the string ends

[unkempt cape]

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