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Grade 12 Computer Science Questions asked by Filo students

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Statement to prompt the user to enter a numeric value: First, the python uses an input function to prompt the user to enter a value. Normally, the entered value will be a string. So, the statement is as follows: input(“Enter a number”) Now, this string input has to be converted into a numeric value. The eval method is used to convert it into a numeric value. So, the statement is as follows: eval(input(“Enter a number”)) If the eval value cannot be converted into a numeric value, then the eval method throws a runtime error. Finally, a numeric value is assigned to the variable. So, the statement is as follows: num=eval(input(“Enter a number”))

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Computer Science

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Views: 5,551

Area and perimeter of a rectangle Program Plan: Declare a main function. Inside the main function, Print the area of a rectangle. Print the perimeter of a rectangle. Call the main function.

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Computer Science

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Views: 5,803

Naming convention for variables: In Python, the following rules must be followed by a valid variable: The variable can contain characters such as letters, digits, and underscore. The variable must begin with an underscore or letter and not with a digit. An existing keyword cannot be a variable. Variables are not case sensitive. For example, “miles” and “MILES” are different. The length of a variable does not have any limit. Descriptive variables are a convention and not a comparison. The preferred naming style is camelCase, but it is not compulsory. Lowercase letters are used for single words. For multiple word concatenations, the first word is made lowercase and the first alphabet of subsequent words are made uppercase.

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Computer Science

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Identifiers Identifiers are names of elements like variables and functions. In python, a valid identifier must follow these steps which include: The characters in an identifier can be letters, digits and underscore. It must start with an underscore or letter and not a digit. An existing keyword cannot be an identifier. Identifiers are not case sensitive. A variable name is known as an identifier. Keyword A python keyword is a reserved word which can’t be used as a name of your variable, class, function etc. These keywords have a special meaning and they are used for special purposes in Python programming language. Hence these are reserved words and have a special meaning.

Topic:

Computer Science

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Views: 5,958

Naming convention for variables: In Python, the following rules must be followed by a valid variable: The variable can contain characters such as letters, digits, and underscore. The variable must begin with an underscore or letter and not with a digit. An existing keyword cannot be a variable. Variables are not case sensitive. For example, “miles” and “MILES” are different...

Topic:

Computer Science

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Views: 5,461

Calculating the day of the week: The modulo operator (%) can be used to get the remainder after a division in Python. Generally, it will be written as follows: dividend % divisor Modulus or remainder operator can be used to find any day of the week as a week has seven days. So, for example, if it is Sunday today, then it will be Sunday in next seven days. If today is Tuesday, it means that it is day 2, since day 1 is Monday...

Topic:

Computer Science

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Views: 5,119

Program: #Initialize width and height variables and assign values to it width = 5.5 height = 2 #Print the statement print("area is", width * height) Expl...

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Computer Science

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Views: 5,478

Calculating the day of the week: The modulo operator (%) can be used to get the remainder after a division in Python. Generally, it will be written as follows: dividend % divisor Modulus or remainder operator can be used to find any day of the week as a week has seven days. So, for example, if it is Sunday today, then it will be Sunday in next seven days. If today is Tuesday, it means that it is day 2, since day 1 is Monday...

Topic:

Computer Science

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Views: 5,842

Average speed Program Plan: Declare a main function. Inside the main function, Print the average speed in miles per hour. Call the main function.

Topic:

Computer Science

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Question 10

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Division operator: The float division operator (/) can be used to divide a number by another in Python. Generally, it will be written as follows: dividend / divisor The integer division operator (//) can be used to divide a number by another in Python. It will be written as follows: dividend // divisor

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Computer Science

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Question 11

Views: 5,465

Naming convention for variables: In Python, the following rules must be followed by a valid variable: The variable can contain characters such as letters, digits, and underscore. The variable must begin with an underscore or letter and not with a digit. An existing keyword cannot be a variable. Variables are not case sensitive. For example, “miles” and “MILES” are different...

Topic:

Computer Science

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Question 12

Views: 5,033

Geometry: great circle distance Program Plan: Import math module. Prompt the user to give the input for the latitude and longitude of two points on the earth in degrees. Compute the great circle distance between the two points. Print the result.

Topic:

Computer Science

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Question 13

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Program: #Initialize the variables and assign value to it x = y = z = 0 # Print the result print("X is", x) print("Y is", y) print("Z is", z) Explanation: The f...

Topic:

Computer Science

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Question 14

Views: 5,642

Program: #Initialize width and height variables and assign values to it width = 5.5 height = 2 #Print the statement print("area is", width * height) Expl...

Topic:

Computer Science

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Question 15

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Population projection Program Plan: Declare a main function. Inside the main function, Print the population for each of the next five years. Call the main function.

Topic:

Computer Science

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Question 16

Views: 5,094

Statement to prompt the user to enter a numeric value: First, the python uses an input function to prompt the user to enter a value. Normally, the entered value will be a string. So, the statement is as follows: input(“Enter a number”) Now, this string input has to be converted into a numeric value. The eval method is used to convert it into a numeric value. So, the statement is as follows: eval(input(“Enter a number”)) If the eval value cannot be converted into a numeric value, then the eval method throws a runtime error. Finally, a numeric value is assigned to the variable. So, the statement is as follows: num=eval(input(“Enter a number”))

Topic:

Computer Science

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Question 17

Views: 5,076

Division operator: The float division operator (/) can be used to divide a number by another in Python. Generally, it will be written as follows: dividend / divisor The integer division operator (//) can be used to divide a number by another in Python. It will be written as follows: dividend // divisor

Topic:

Computer Science

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Question 18

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Random character Program Plan: Import time module. Obtain a random uppercase letter using the time.time() function. Print the result.

Topic:

Computer Science

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Question 19

Views: 5,657

Identifiers Identifiers are names of elements like variables and functions. In python, a valid identifier must follow these steps which include: The characters in an identifier can be letters, digits and underscore. It must start with an underscore or letter and not a digit. An existing keyword cannot be an identifier. Identifiers are not case sensitive. A variable name is known as an identifier. Keyword A python keyword is a reserved word which can’t be used as a name of your variable, class, function etc. These keywords have a special meaning and they are used for special purposes in Python programming language. Hence these are reserved words and have a special meaning.

Topic:

Computer Science

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Question 20

Views: 5,630

Program: #Initialize the variables and assign values to it a=1 b=2 a, b=b, a # Print the result print("The value of a is", a, "and the value of b is", b) Explanation: T...

Topic:

Computer Science

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