len of str vbs

#include <stdio.h>
#include <string.h>

int main() {
    char str[] = "Hello, world!";
    int len = strlen(str);
    printf("Length of the string: %d", len);
    return 0;
}

Explanation:

1. #include <stdio.h> and #include <string.h>: These lines include necessary header files for standard input/output functions (stdio.h) and string functions (string.h).

2. int main() { ... }: This is the main function where the program execution begins and contains the code for finding the length of a string.

3. char str[] = "Hello, world!";: Defines a character array named str and initializes it with the string "Hello, world!".

4. int len = strlen(str);: Declares an integer variable len and assigns it the value returned by strlen() function. strlen() calculates the length of the string stored in the variable str.

5. printf("Length of the string: %d", len);: Prints the length of the string using printf() function with a format specifier %d to display the integer value stored in the variable len.

6. return 0;: Indicates the end of the main() function and returns 0, indicating successful execution of the program to the operating system.