Example: String Length with While Loop and Pointer in C

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// String Length with While Loop and Pointer
#include <stdio.h>

int main() {
    char str[] = "C Programming"; // The string to measure
    char *ptr = str;             // Pointer to the beginning of the string
    int length = 0;              // Variable to store the length
    
    // Step 1: Iterate through the string using a while loop and pointer
    // The loop continues as long as the character pointed to is not the null terminator '\0'
    while (*ptr != '\0') {
        // Step 2: Increment the length counter
        length++;
        // Step 3: Move the pointer to the next character
        ptr++;
    }
    
    // Step 4: Print the calculated length
    printf("The string is: \"%s\"\n", str);
    printf("Length of the string (while loop with pointer): %d\n", length);
    
    return 0;
}