1. C++ For loop program to find the sum, average, range of N...

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# 1. C++ For loop program to find the sum, average, range of N...

1. C++ For loop program to find the sum, average, range of N non-zero positive integers.

• This program asks user to enter the value of N. Here, N indicates the number of values or terms from which user wants to sum, average, and range. This program then ask user to enter each term or values.

• For example, suppose, a user entered N (number of value or term) as 4. Then the user entered the following four (4) values as: 20, 40, 60, and 80. So, the sum will be 20+40+60+80=200. You need to enter each term/value using for loop. Now calculate the sum.

• For calculating range, you need to subtract smallest number from the largest number.

• Once you get the sum, you can simply divide sum by N; you will get the average value.

Sample output 1:

Enter the Value of N: 5

Enter the values: 10 20 30 40 50

Sum:150  Average:30  Range:40

Sample output 2:

Enter the Value of N:4

Enter the values: 20 40 60 80

Sum:200 Average:50 Range:60

2. C++ program to read a string from the keyboard, and count number of digits, letters, and whitespaces on the entered string.

• This program asks user to enter string which contains following characters: letters or digits, or whitespaces. The length of the string should be more than 8. You should use getLine() function to read string from keyboard.

• You need to extract each character, and check whether the character is a letter or digit or whitespace.

• You can access character at a specific index using .at() function. Once you have extracted the character, you can test the extracted character using character test methods.

• You can look at google/web search to check the functions (isdigit, isalpha, and isspace) available to test a character. Use the syntax properly in your code.

• Once you found a match, simply increase the value of the counter by 1. You need 3 separate counters to count number of letters, digits, and spaces.

• In this program, you do not need to worry about uppercase or lowercase letter.

Sample Output 1

Enter the string: Name of your University

Number of spaces: 3

Number of letters: 20

Number of digits: 0

Sample Output 2

Enter the string: CS 101 Computer science

Number of spaces: 3

Number of letters: 17

Number of digits: 3

Sample Output 3

Enter the string: cbs 123 def

Number of spaces: 2

Number of letters: 6

Number of digits: 3

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