C Program to Find the Length of a String without using the Built-in Function

Code:

#include

void main()
{
    char string[50];
    int i, length = 0;

    printf("Enter a string \n");
    gets(string);
    /*  keep going through each character of the string till its end */
    for (i = 0; string[i] != '\0'; i++)
    {
        length++;
    }
    printf("The length of a string is the number of characters in it \n");
    printf("So, the length of %s = %d\n", string, length);
}

Output:

Enter a string
ExecuteCodes
The length of a string is the number of characters in it
So, the length of ExecuteCodes = 12

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