Question

In C program

#include<stdio.h>

Task is to implement the Triangle Program in C. The specification for the program is:

The triangle program accepts three strings, a, b, and c (the sides of a triangle) as command line parameters.

The sides of the triangle must be integers.

The sides a, b, and c must satisfy the following conditions:

c1. 1 ≤ a ≤ 200

c2. 1 ≤ b ≤ 200

c3. 1 ≤ c ≤ 200

c4. a < b + c

c5. b < a + c

c6. c < a + b

The output of the program is the type of triangle determined by the three sides.

The program will output one of these five mutually exclusive outputs:

If all three sides are equal, the program output is "Equilateral".

If exactly one pair of sides is equal, the program output is "Isosceles".

If no pair of sides is equal, the program output is "Scalene".

If any of conditions c4, c5, and c6 is not met, the program output is "Not A Triangle."

If an input value fails any of conditions c1, c2, or c3, the program will output a message like: "Value of b is not in the range of permitted values." The message should be for the first parameter that fails a condition (not all of them).

Program must validate the input and ensure that the proper number of parameters are passed into the main function (if not, print a "usage message" with a.out as the program name).

Answer 1

#include<stdio.h>
int main(){
int a,b,c;
printf("Enter three sides of triangle with space seperated integers\n");
scanf("%i%i%i",&a,&b,&c);
if(a<1 || a>200){
printf("Value of a is not in the range of permitted values.\n");
}else if(b<1 || b>200){
printf("Value of b is not in the range of permitted values.\n");

}else if(c<1 || c>200){
printf("Value of c is not in the range of permitted values.\n");
}else{
if(a<b+c && b<a+c && c<a+b){
if( a==b && b==c){
printf("Equilateral\n");
}else if(a==b || b==c || a==c){
printf("Isosceles\n");
}else {
printf("Scalane\n");
}
}else{
printf("Not a traigle\n");
}
}
}

OUTPUT :

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