Complex
numbers definition

Complex numbers
are two dimensional numbers i.e. it consists real part and imaginary part.

Complex numbers are written as a
+ ib

Where a and b are real numbers
and i^{2} = -1

Code 1:

1. How to use complex numbers in c

2. C language complex numbers

#include <stdio.h>

int main(){

int a,b;

printf( "Enter
any complex number in the format a+ib: " );

scanf( "%d+i%d" ,&a,&b);

printf( "Real
part is: %d" ,a );

printf( "\nImaginary
part is: %d" ,b);

return 0;

}

Code 2:

1. C program to printf complex numbers

#include <stdio.h>

int main (){

int a,b;

printf( "Enter
the real part of complex number: " );

scanf( "%d" ,&a);

printf( "Enter
the imaginary part of complex number: " );

scanf( "%d" ,&b);

printf( "\nComplex
number is: %d%+di" ,a,b );

return 0;

}

Operation
on complex numbers:

Addition of complex number

(a + ib) + (c + id) = (a+c) +
i(b+d)

Subtraction of complex numbers

(a + ib) -(c + id) = (a+c) +
i(b-d)

Multiplication of complex numbers

(a + ib) *(c + id) = (ac-bd) +
i(bc+ad)

Divison of complex numbers

(a + ib) / c + id) = ((ac + bd) + i(bc-ad))/(c^{2}
+ d^{2} )

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