How to read a numeric expression from user in R studio

I want to read a numeric expression (ex:- 9/3) from the user during runtime and print the answer(3). I used readline() but since it reads the line as a string, when as.numeric() function is applied the output is NaN. How do I convert the expression to get a numeric value? This is the code I… Read More How to read a numeric expression from user in R studio

How can I find out which (wrong) data type the user inputted instead of an int?

So I’m completely new to Java and programming in general and I’m doing my first little program where I ask the user’s age and determine whether they’re an adult. I wanted to add an error message which tells the user they inputted the wrong data type and not an integer. However, when I write a… Read More How can I find out which (wrong) data type the user inputted instead of an int?

print is returning an address instead of a value

I’m new to python and i’m trying to print this function but it just shows the address of the function. def eligible(age, lingo, language): return "Eligible!" if(int(age) in range(25, 46)) and (lingo==’ingles’) and (language==’python’) else "Not Eligible!" age=input("What’s your age?: ") language=input("What language do you speak?: ") planguage=input("What programing language do you use?: ") eligible(age,… Read More print is returning an address instead of a value

Trying to validate a text input, so it allows characters in the alphabet only as the input but I'm having problems. (Python)

So, I have a homework where I’m assigned to write multiple python codes to accomplish certain tasks. one of them is: Prompt user to input a text and an integer value. Repeat the string n times and assign the result to a variable. It’s also mentioned that the code should be written in a way… Read More Trying to validate a text input, so it allows characters in the alphabet only as the input but I'm having problems. (Python)

Are there any statements that can be used to run the code(s) again?

import random import sys print("Password Generator") print("* Attention: – You may not generate a password with more than 70 characters\n" " – You may not enter letters") characters = "abcdefghijklmnopqrstuvwxyz" \ "ABCDEFGHIJKLMNOPQRSTUVWXYZ0123456789!@#$%^&*" pass_length = input("Enter your password length: ") Here I just want to make sure the information that the user’s input are numbers, not… Read More Are there any statements that can be used to run the code(s) again?