/// Access last character in string
    ///
    #define StrLast(str) VecLast(str)
    
    ///

    // Test VecFirst and VecLast functions
    bool test_vec_first_last(void) {
    printf("Testing VecFirst and VecLast\n");
    
    // Create a vector of integers

    // Check first and last elements
    bool result = (VecFirst(&vec) == 10);
    result      = result && (VecLast(&vec) == 30);
    
    // Modify first and last elements

    // Modify first and last elements
    VecFirst(&vec) = 15;
    VecLast(&vec)  = 35;
    
    // Verify changes