Input 3 angle to chech triangle valid or not
#include<stdio.h
>
#include<string.h>
int main()
{
float a1,a2,a3;
printf("Enter first angle\n");
scanf("%f",&a1);
printf("Enter second angle\n");
scanf("%f",&a2);
printf("Enter third angle\n");
scanf("%f",&a3);
if((a1+a2+a3)==180)
{
printf("Angle is Valid");
}
else
{
printf("Angle is not valdi");
}
}
//*SECOND METHOD
#include<stdio.h>
#include<string.h>
int main()
{
float a1,a2,a3;
printf("Enter first angle\n");
scanf("%f",&a1);
printf("Enter second angle\n");
scanf("%f",&a2);
printf("Enter third angle\n");
scanf("%f",&a3);
((a1+a2+a3)==180)?printf("Angle is valid"):printf("Angle is not valid");
}

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