# C | Data Types | Question 7

Assume that the size of char is 1 byte and negatives are stored in 2’s complement form

`#include<stdio.h>` `int` `main()` `{` ` ` `char` `c = 125;` ` ` `c = c+10;` ` ` `printf` `(` `"%d"` `, c);` ` ` `return` `0;` `}` |

**(A)** 135**(B)** +INF**(C)** -121**(D)** -8**Answer:** **(C)****Explanation:** 125 is represented as 01111101 in binary and when we add 10 i.e 1010 in binary it becomes : 10000111. Now what does this number represent?

Firstly, you should know that char can store numbers only -128 to 127 since the most significant bit is kept for sign bit. Therefore 10000111 represents a negative number. To check which number it represents we find the 2’s complement of it and get 01111001 which is = 121 in decimal system. Hence, the number 10000111 represents -121.

Quiz of this Question