`P070.c`¶

Problem Statement

Write a program to perform addition of two complex number having fields 'real' and 'img' of type integer.

Metadata¶

Property	Detail
Author	Amit Dutta amitdutta4255@gmail.com
Date	24 Jan 2026
License	MIT License (See the LICENSE file for details)
Difficulty	Intermediate (index: 4 / 10)

Concepts¶

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Recursion
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Source Code¶

#include <stdio.h>

struct complex
{
    int real;
    int img;
};

void getData(struct complex *c)
{
    printf("Enter real: ");
    scanf("%d", &c->real);
    printf("Enter imaginary: ");
    scanf("%d", &c->img);
}

struct complex add(struct complex c1, struct complex c2)
{
    struct complex r;
    r.real = c1.real + c2.real;
    r.img = c1.img + c2.img;
    return r;
}

void display(struct complex c)
{
    printf("%d+%di", c.real, c.img);
}

int main()
{
    struct complex c1, c2, c3;
    getData(&c1);
    getData(&c2);
    printf("\nComplex Number 1:\n");
    display(c1);
    printf("\nComplex Number 2:\n");
    display(c2);
    c3 = add(c1, c2);
    printf("\nResult: \n");
    display(c3);
    return 0;
}

Explanation¶

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    You are explaining a C programming code to a beginner.

    STRICT RULES:

    - Only use the given code. Do NOT assume anything not present.

    - Do NOT add extra examples.

    - Keep explanation clear and short.

    - If something is unclear, say "Not clear from code".

    - Follow the exact format below. Do NOT change headings.

    FORMAT:

    [START]

    ## What it does

    (Explain the overall purpose in 1-2 sentences)

    ## Step-by-step

    (Explain how the code works in steps, simple language)

    ## Key Concepts

    (List concepts like loop, condition, function, etc.)

    ## Notes

    (Mention any limitations, errors, or assumptions)

    [END]

    CODE (P070.c):

    #include <stdio.h>

    struct complex
    {
        int real;
        int img;
    };

    void getData(struct complex *c)
    {
        printf("Enter real: ");
        scanf("%d", &c->real);
        printf("Enter imaginary: ");
        scanf("%d", &c->img);
    }

    struct complex add(struct complex c1, struct complex c2)
    {
        struct complex r;
        r.real = c1.real + c2.real;
        r.img = c1.img + c2.img;
        return r;
    }

    void display(struct complex c)
    {
        printf("%d+%di", c.real, c.img);
    }

    int main()
    {
        struct complex c1, c2, c3;
        getData(&c1);
        getData(&c2);
        printf("\nComplex Number 1:\n");
        display(c1);
        printf("\nComplex Number 2:\n");
        display(c2);
        c3 = add(c1, c2);
        printf("\nResult: \n");
        display(c3);
        return 0;
    }

P070.c¶