﻿ C : Check whether a triangle can be formed by given value

# C Exercises: Check whether a triangle can be formed by given value

## C Conditional Statement: Exercise-15 with Solution

Write a C program to check whether a triangle can be formed with the given values for the angles.

Pictorial Presentation:

Sample Solution:

C Code:

``````#include <stdio.h>
void main()
{
int anga, angb, angc, sum; //are three angles of a triangle

printf("Input three angles of triangle : ");
scanf("%d %d %d", &anga, &angb, &angc);

/* Calculate the sum of all angles of triangle */
sum = anga + angb + angc;

/* Check whether sum=180 then its a valid triangle otherwise not */
if(sum == 180)
{
printf("The triangle is valid.\n");
}
else
{
printf("The triangle is not valid.\n");
}
}
```
```

Sample Output:

```Input three angles of triangle : 40 55 65
The triangle is not valid.
```

Flowchart:

C Programming Code Editor:

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## C Programming: Tips of the Day

How to use __FILE__ macro shows full path?

Try

```#include<string.h>

#define __FILENAME__ (strrchr(__FILE__, '/') ? strrchr(__FILE__, '/') + 1 : __FILE__)
For Windows use '\\' instead of '/'.
```

Ref: https://bit.ly/3mOf045

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