Chapter 10: Problem 29

Look at the following array definition. char str [10] Assume that name is also a char array, and it holds a C-string. Write code that copies the contents of name to str if the C-string in name is not too big to fit in str.

Short Answer

Expert verified

Question: Write a code that checks and copies the contents of the array `name` into `str` if the C-string `name` is not too big to fit into `str`. Answer: To copy the contents of `name` into `str`, you can use the following code: ```c #include #include int main() { char str[10]; char name[] = "John"; if (strlen(name) < sizeof(str)) { strcpy(str, name); } return 0; } ```

Step by step solution

Include necessary header files

In order to use the functions `strlen()` and `strcpy()`, we need to include the necessary header files in our code. In this case, we need to include the `` header file for `strlen()` and `strcpy()` functions. ```c #include #include ```

Declare the char arrays

Now, we need to declare the `char` arrays `str` and `name`. In this example, we assume that `name` is already declared and initialized with a value as a C-string. We declare `str` as an array of size 10. ```c char str[10]; char name[] = "John"; ```

Check the length of the 'name'

We need to check if the length of the C-string `name` is less than the size of the `str` array. This can be done using the `strlen()` function. It returns the length of the C-string without counting the null character. ```c if (strlen(name) < sizeof(str)) { // Copy the contents of the 'name' to 'str' } ```

Copy contents of 'name' to 'str'

If the length of the C-string `name` is less than the size of the `str` array, we can copy the contents from `name` to `str` using the `strcpy()` function. ```c if (strlen(name) < sizeof(str)) { strcpy(str, name); } ```

Complete code

Here is the complete code to perform the operation: ```c #include #include int main() { char str[10]; char name[] = "John"; if (strlen(name) < sizeof(str)) { strcpy(str, name); } return 0; } ```

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Look at the following array definition. char str [10] Assume that name is also a char array, and it holds a C-string. Write code that copies the contents of name to str if the C-string in name is not too big to fit in str.

Short Answer

Step by step solution

Include necessary header files

Declare the char arrays

Check the length of the 'name'

Copy contents of 'name' to 'str'

Complete code

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