C program to find the length of a String without using function strlen()

#include <stdio.h>
int main()
{
    
    char str[100],i;
    printf("Enter a string: \n");
    scanf("%s",str);

    for(i=0; str[i]!='\0'; ++i);
       printf("\nLength of input string: %d",i);
    
    return 0;
}

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