[Delivery] Character array

Bài 1: Write a program which prints the letters in a char array in reverse order. For example, if the array contains {'c', 's', 'c', '2', '6', '1'}the output (to the terminal) should be "162csc".

My code + result

Bài 2: Write a  program : declare a char array and the size of the array (of type char). This function counts the number of digit letters in the char array.

My code + result

Bài 3: Write a program that counts the number of words in a string.

My code + result

Bài 4: Write a program that accept two string, after checking if string1 equals string2 then print 'string 1 equals string2', else print string1 less than or greater than string 2.

My code + result

Bài 5: Write a function that scans a character array for the character - and replaces it with _.

My code + result

Bài học rút ra:

• Cách dùng #define để đặt giá trị cho size của mảng 
• Cấu trúc : puts(), gets()
• Cấu trúc mảng : storage_class data_type array_name[size_expr]