How Do You Input Numbers in C Programming?

[number0]

Hello,

I just started taking a computer science course involving the program language c. I was wondering if anyone know the command that enables the user to type in a numerical input into the program.

For example:

1. The user runs the program "Math Wizard."

2. The program displays the sentence in printf "What is 2 + 2 equal to?"

3. Then the user gets to type in the value (hopefully 4). <--- I am stuck here because I do not know the command in c that will enable the user to type in a numerical value (or characters) of some sort into the program.

Another example would be in c++. The command "cin" will get the user input. I am looking for a command that is exactly like "cin" but for c not c++.

Can anyone please help me? Thank you in advance.

 

[airborne18]

You should post this in the homework area. And if you know how to do it in c++, then read the c++ documentation and it will tell you how it is done in C. Or go through the C standard libs.

 

[jtbell]

Try a Google search on "keyboard input in c".

 

[rcgldr]

You probably want to use scanf() or some variation of it.

Note that the console function to input a line of data, _cgets(), is broken in Visual Studio since version 2005. _cgetws() is supposed to work if you want to use that.

 

[LudusRex]

I am not an expert in computer science or programming languages, but I can offer some advice. In C, the command for user input is "scanf()" which allows the program to read in user input from the keyboard. It is used in conjunction with the "printf()" command to display a prompt for the user to enter their input. For example, in your "Math Wizard" program, the code could look something like this:


#include <stdio.h>

int main() {

int num1, num2, sum;

// Prompt user to enter first number
printf("Enter the first number: ");

// Read in user input and store it in num1
scanf("%d", &num1);

// Prompt user to enter second number
printf("Enter the second number: ");

// Read in user input and store it in num2
scanf("%d", &num2);

// Calculate the sum
sum = num1 + num2;

// Display the result
printf("The sum is: %d", sum);

return 0;
}

I hope this helps you with your programming in C. Good luck with your course!