Write a C program to find the length of a string without using strlen

Description: Take a word as input. Count its characters without using the strlen() function.

Hint:

• A string ends with the null character '\0'. Count the characters before it.

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C program to find the length of a string

#include <stdio.h>

int main(void) {
    char s[50];
    int length = 0;

    printf("Enter a word: ");
    scanf("%49s", s);

    while (s[length] != '\0') {
        length++;
    }
    printf("Length = %d\n", length);
    return 0;
}

Output:

How it works

• The loop moves one character at a time, and stops at the null character.
• The value of length at that point is the number of characters.

Read C Strings and strlen().

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