# Finding 1’s Complement of a Binary Number is C

The one;s complement operator (~) is a unary operator that causes the bits of its operand to be inverted ( i. e. reversed) so that 1s becomes 0s and 0s becomes 1s. This operator always precedes its operand, The operand must be and integer-type. The one’s complement operator is sometimes referred to as the complementation operator. It is a member of the same precedence group as the other unary operations. Thus, its associativity is right to left. Now the following example illustrates the implementation of 1’s complement operator is a program,

**Source Code: **

1 2 3 4 5 6 7 | #include <stdio.h> int main(){ unsigned i = 0x7fff; printf("hexadecimal value: i = %x ~i = %x\n", i, ~i); printf("decimal value: i = %u ~i = %u\n", i, ~i); return 0; } |

**Output**

hexadecimal value: i = 7fff ~i = ffff8000

decimal value: i = 32767 ~i = 4294934528

giving command and showing out put is compilers risk…but explanation wanted on how the compilers converts so..

hi friends if N is a number ~N result is -(N+1).this is a standard formula.