🚀 Programming Example

Program to find angles of a triangle

👁 6,391 Views

💻 Practical Program

📘 Step Learning

Write a C Program to input two angles from user and find third angle of the triangle. How to find all angles of a triangle if two angles are given by user using C programming. C program to calculate t

💻 Program Code

/**
 * C program to find all angles of a triangle if two angles are given
 */

#include <stdio.h>

int main()
{
    int a, b, c;

    /* Input two angles of the triangle */
    printf("Enter two angles of triangle: ");
    scanf("%d%d", &a, &b);

    /* Compute third angle */
    c = 180 - (a + b);

    /* Print value of the third angle */
    printf("Third angle of the triangle = %d", c);

    return 0;
}

🖥 Program Output

Enter two angles of triangle: 60 30
Third angle of the triangle = 90

📘 Explanation

Required knowledge

Arithmetic operators, Data types, Basic input/output

Properties of triangle

Sum of angles of a triangle is 180°.
Sum of angles of triangle

Let us apply basic math to derive formula for third angle. If two angles of a triangle are given, then third angle of triangle is given by -

Logic to find third angle of a triangle

Step by step descriptive logic to find third angle of a triangle -

Input two angles of triangle from user. Store it in some variable say a and b.
Compute third angle of triangle using formula c = 180 - (a + b).
Print value of third angle i.e. print c.

🎯 How to learn from this example

First understand the algorithm carefully. Then study the program line-by-line and compare it with the output. Finally, review the explanation section to strengthen your logic and programming understanding.

🔥 Practice suggestion

Rewrite the program without looking at the code. Modify values, conditions or logic and run it again. This helps improve confidence and strengthens coding skills much faster.