Why we type this for to code str3[j]='\0' ??? And have a look to the code guys😅😅

Question

#include<stdio.h>
#include<string.h>
int main()
{
int i=0,j=0;
char str1[50],str2[50],str3[50];
printf("Enter the string 1 = ");
gets(str1);
printf("Enter teh string 2 = ");
gets(str2);
while(str1[i]!='\0'){
str3[j]=str1[i];
i++;
j++;
}
i=0;
while(str2[i]!='\0')
{
str3[j]=str2[i];
i++;
j++;
}
str3[j]='\0';
puts(str3);
return 0;
}

Answer 1

“\0” is the null termination character. It is used to mark the end of a string. Without it, the computer has no way to know how long a group of characters (string) goes. In C/C++ it looks for the Null Character to find the end of a string.

https://www.google.com/url?sa=t&source=web&rct=j&url=https://www.quora.com/What-is-use-of-0-in-the-C-programming-language&ved=2ahUKEwjC-aSjjoPxAhVzwTgGHS6oD7AQFjABegQIBBAF&usg=AOvVaw1SFPI0gE3MPCWjlCDwSa2k

Answer 2

Bluebuds_ckmpany You might as well could use the ASCII value of the null character, i.e., 0. That'd save some time.