Question

1.Use Structured English to write a step-by-step procedure (algorithm) for the problems given below.

a.A teller has to check a customer’s ID to see if he can sell him alcohol. If the age on the ID is less than 21, there will be no sale; otherwise (equal or greater than 21), the sale can go through.
b.Calculate the product of all the numbers you are given from an input device; then print the result.

Answer 1

a)

Algorithm:

Step 1: Start
Step 2: Declare variable age;
Step 3: read variable age;
Step 4: if age is grater than or equal to 21
           print sale can go through
       else if age lesser than 21
           print sale cannot go through
Step 5: Stop.

C-program:
#include<stdio.h>

int main() {
int age;
printf("enter age:");
scanf("%d",&age);
if(age>=21)
   printf("the sale can go through\n");
else
    printf("the sale cannot go through\n");
}

Output:

b)

Algorithm:

Step 1: Start
Step 2: Declare variables a,result;
Step 3: while(a!=0)
       {
       read variable a;
       if(a!=0)
       result *= b;
       }
Step4 : print result.
Step 5: Stop.

C Program:

#include<stdio.h>

int main() {
   int x=1;
   int result=1;
   while(x!=0)
   {
       scanf("%d",&x);
       if(x!=0)
       result = result*x;
   }

   printf("product of numbers is = %d", result);

}