C program for "Write a program to check whether a triangle is valid or not, when the three angles of the triangle are entered through the keyboard."

Problem: C program for "Write a program to check whether a triangle is valid or not, when the three angles of the triangle are entered through the keyboard."

Logic used :

• Takes all angles as input
• Calculate the sum of all three
• if the sum is equal to 180 then the triangle is valid
• else the triangle is not valid

Demo:

if((a+b+c)==180){

        printf("The traingle is valid.");

    }else{

        printf("The traingle is not valid.");

    }

C program :

// Program by shyam sunder kanth

#include<stdio.h>

int main(){

    int a,b,c;

    printf("Enter angle A :");

    scanf("%d",&a);

    printf("Enter angle B :");

    scanf("%d",&b);

    printf("Enter angle C :");

    scanf("%d",&c);

    if((a+b+c)==180){

        printf("The traingle is valid.");

    }else{

        printf("The traingle is not valid.");

    }

    return 0;

}

Codes used :

• #include<stdio.h> : Header file for input output
• int : Integer data type
• a,b,c : Variable used
• printf : Function for displaying message
• scanf : Function for taking input
• if-else : Conditional statement

Do comments, If any doubt

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