Question

Complete the following assignment in C programming language.

1. Get the user’s first name and store it to a char array
   • Declare a character array to hold at least 20 characters.
   • Ask for the user’s first name and store the name into your char array.
   • Hint: Use %s for scanf. %s will only scan one word and cannot scan a name with spaces.
2. Get 3 exam scores from the user:
   • Declare an array of 3 integers
   • Assume the scores are out of 100, and use a for loop to get user’s input
   • Your prompts should print out which exam score you are asking for:
     1. Example: “What is the score of Exam #1?” … “What is the score of Exam #3?”
   • Warning: Be careful of your array indexes!
3. Find out the average exam score:
   • Use a for loop to calculate the sum of all exams.
   • Divide the sum by 3 to get the average and store the is data in a variable.
4. Print out the summary for the use similar to:
   • “Hello NAME, based on your exam score of 80, 90, and 100, your average is 90.0 with a letter of an ‘A.’”

Answer 1

Below is the code for the above question in C:

#include <stdio.h>

int main()
{
char first_name[20];
char name[20];
int exam_scores[3];
int sum = 0;
int i;
  
  
printf("Enter your name : ");
scanf("%s", first_name);
  
for (int j = 0; first_name[j] != '\0'; j++)
{
name[j] = first_name[j];
}
  

for(i = 1 ; i <= 3 ; i++)
{
printf("What is the score of Exam#%d? \n",i);
scanf("%d", &exam_scores[i]);
}
  
  
for(int i = 1 ; i <= 3 ; i++)
{
sum = sum+exam_scores[i];
}
  
float average = sum / 3;
  
printf("hello %s, based on your exam score of %d, %d, and %d, your average is %f with a letter of an ‘A.’",name,exam_scores[1],exam_scores[2],exam_scores[3],average);
  
return 0;
}

Screenshot :

Explanation :

In the above code first the user is prompted to enter his or her name followed by prompted to enter the marks 1 , marks 2, marks 3 . This is achieved by using the for loop for asking the user to enter the marks . Then using the for loop the marks are added and then divide by the constant 3 to calculate the average of the three marks . In the end the name and the average of the three marks are being displayed in the format mentioned in the question above .