Chapter 10, Problem 8PC

Program Plan Intro

Sum of Digits in a String

Program plan:

• Include the required header files to the program.
• Declare function prototype which is used in the program.
• Define the “main()” function.
  • Declare the required variables.
  • Get the input C-string from the user and call the function “digit” with the input C-string.
  • The “for” loop is used to convert the C-string to digit
    • Call the function “digit” with an argument and store it in a variable.
    • Sum all that values and store in a separate variable.
    • Found the highest and lowest value of the C-string using “if” condition.
  • Print the result.
• Define the “digit” function.
  • Declare the required variable.
  • Convert the character string to integer.
    • Define an array to hold an empty string value.
    • Convert that string to integer using “atoi” function.
  • If the input is not a digit, return 0.
  • Finally return the result to the main function.