# C Programming — Adding Two Integers

> A basic C example that reads two integers from the keyboard, adds them and prints the result.

- Author: Muhammet Ali Köker
- Language: en
- Canonical: https://alikoker.com.tr/en/c-programming-add-two-integers
- Translation: https://alikoker.com.tr/c-iki-tam-sayiyi-toplama
- Published: 2013-07-08T13:00:00+03:00
- Modified: 2026-08-08T13:49:35+03:00
- Verified: 2026-08-07T11:00:00+03:00
- Type: article

The first example only printed text to the screen, which is an output device. This example reads two numbers from the keyboard, adds them and prints the result.

```c
#include <stdio.h>
#include <conio.h>
int main()
{
int number1, number2, total;
printf("Enter the first number: ");
scanf("%d", &number1);
printf("Enter the other number: ");
scanf("%d", &number2);
total = number1 + number2;
printf("Total: %d", total);
getch();
return 0;
}
```

- The `int` expression on the first line specifies the data type; the comma-separated expressions that follow are variables.

- Variables must first be declared. Three integer variables are declared here.

- The `printf()` function prints “Enter the first number:” on the screen.

- As shown in `scanf("%d", &number1);`, the function receives two parameters, although it can receive more.

- The first parameter (`%d`) indicates that the input is a decimal integer.

- Notice the ampersand (`&`) before the second parameter. In this context, the operator refers to an address.

- In brief, `&number1` passes the address of `number1` to the function.

## References

- **[1]** Brian W. Kernighan; Dennis M. Ritchie. (1988). The C Programming Language, Second Edition. Prentice Hall.
- **[2]** International Organization for Standardization. (2011). ISO/IEC 9899:2011 - Programming Languages - C. ISO.

## Cite This Work

Köker, M. A. (2013). C Programming — Adding Two Integers. alikoker.com.tr. https://alikoker.com.tr/en/c-programming-add-two-integers

- BibTeX: https://alikoker.com.tr/en/c-programming-add-two-integers.bib
- RIS: https://alikoker.com.tr/en/c-programming-add-two-integers.ris
- CSL-JSON: https://alikoker.com.tr/en/c-programming-add-two-integers.csl.json