7.6 LAB: Checker for integer string Forms often allow a user to enter an integer. Write a program that takes in a string representing an integer as input, and outputs yes if every character is a digit 0-9. Ex: If the input is: 1995 the output is: yes Ex: If the input is: 42,000 or any string with a non-integer character, the output is: no

Following are the program in the Python Programming Language:

def check (num) : #define function

if (num. isdigit ()) : #set if statement

return "yes"; #return yes if condition is true

else:

return "no"; # return no if condition is false

string=input ("Enter the numbers 0-9: ") #get input from the user

print (check (string)) #print and call the function

Output:

Enter the numbers 0-9: 1995

yes

Enter the numbers 0-9: 42,000

no

Explanation:

Here, we define a function "check () " and pass an argument in its parameter "num" inside the function.

we set if-else conditional statement and check the value stored in the variable "num" is the digit by using built in function "isdigit () " then return "yes". Then, otherwise it return "no".

Finally, we get the input from the user in the variable "string" then, we call the function through "print () " function.