C program to find angles of triangle if two angles are given

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 the third angle of a triangle if two angles are given.

 Enter first angle: 60 Enter second angle: 80

 Third angle = 40

Required knowledge

Arithmetic operators, Data types, Basic input/output

Properties of triangle

Sum of angles of a triangle is 180°.

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 –

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

Program to find angles of a triangle

/** * 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; }

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

Happy coding 😉