How to add two complex numbers by passing structure to a function in C language?



In order to add two complex numbers in C programming language, the user has to take two complex numbers as structure members and perform addition operation on those two numbers by creating a user-defined function.

Algorithm

Refer an algorithm given below for addition of two complex numbers.

Step 1: Declare struct complex with data members.
Step 2: Declare name for structure and variables.
Step 3: Enter real and imaginary part for first complex number at run time.
Step 4: Enter real and imaginary part for second complex number at runtime
Step 5: Compute addition of number1 and number2 by calling function. Go to step 7.
Step 6: Print the result.
Step 7: Compute addition
  • Declare temp variable
  • temp.real = num1.real + num2.real;
  • temp.imag = num1.imag + num2.imag;
  • return (temp);

Example

Following is the C program for adding two complex numbers by passing structure to a function −

 Live Demo

#include <stdio.h>
typedef struct complex{
   float real;
   float imag;
} complex;
complex addition(complex num1, complex num2);
int main(){
   complex num1, num2, value;
   printf("entering real and imag parts of first complex no:
");    scanf("%f %f", &num1.real, &num1.imag);    printf("entering real and imag parts of second complex no:
");    scanf("%f %f", &num2.real, &num2.imag);    value= addition(num1, num2);    printf("result = %.1f + %.1fi", value.real, value.imag);    return 0; } complex addition(complex num1, complex num2){    complex temp;    temp.real = num1.real + num2.real;    temp.imag = num1.imag + num2.imag;    return (temp); }

Output

When the above program is executed, it produces the following result −

entering real and imag parts of first complex no:
entering real and imag parts of second complex no:
result = 0.0 + 0.0i

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