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

/* Program written in C Programming language using DEV-C++ Editor on windows operating system */

#include<stdio.h>
int main(){
   char fname[10];//firstname array
   char lname[10];//lname array
   printf("\n Enter First name and Last name of Student:::");
   //accept two string from user using scanf statement
   scanf("%s%s",&fname,&lname);
   int score[3];//score array with three size
   int tempscore;//temp variable to hold score
   int i=0;//index for getting three score
   for(i=0;i<3;i++){
       int f=1;
       // while is true till user enter valid score
       while(f){
           //accept score
       printf("\n Enter Valid Score for Examp %d ",(i+1));
       scanf("%d",&tempscore);
       // check validity of score
       if(tempscore>=0 && tempscore<=100){
           score[i]=tempscore;
           f=0;
       }
       }// end of while
      
   }//end of for loop
   int ch;
   int choice,sum=0;
   float average;
   do{
       //accept choice from user
       printf("\n 1. What is the score of Exam #1? Enter 1");
       printf("\n 2. What is the score of Exam #2? Enter 2");
       printf("\n 3. What is the score of Exam #3? Enter 3");
       printf("\n 4. Get Average Score of student");
       printf("\n 5. Get Summary of All tests/Student");
       printf("\n");
       scanf("%d",&choice);
       switch(choice){// jump to the case
           case 1:printf("\n Score of Test 1 is %d ",score[0]);// print score of test 1
           break;
           case 2:printf("\n Score of Test 2 is %d ",score[1]);// print score of test 2
           break;
           case 3:printf("\n Score of Test 3 is %d ",score[2]);// print score of test 3
           break;
           case 4:
               sum=0;
                for(i=0;i<3;i++)
               sum=sum+score[i]; // get sum sum of testes
               average=(float)sum/(float)3;//get average
               printf("\n Average score of all tests is %f ",average);
           break;
           case 5:
               sum=0;
                for(i=0;i<3;i++)
               sum=sum+score[i]; // get sum sum of testes
               average=(float)sum/(float)3;//get average
               printf("\n Average score of Test 1 =%d,Test 2=%d,Test 3=%d is %f ",score[0],score[1],score[2],average);
           break;
          
           default:printf("\n Wrong choice entered try again");
       }//end of switch
       printf("\n DO you want to continue then enter 1 for continue :");
       scanf("%d",&ch);
   }while(ch==1);
}

/*

output

Enter First name and Last name of Student:::Bhushan Mahajan

Enter Valid Score for Examp 1 965

Enter Valid Score for Examp 1 -698

Enter Valid Score for Examp 1 58

Enter Valid Score for Examp 2 47

Enter Valid Score for Examp 3 -1

Enter Valid Score for Examp 3 847

Enter Valid Score for Examp 3 10

1. What is the score of Exam #1? Enter 1
2. What is the score of Exam #2? Enter 2
3. What is the score of Exam #3? Enter 3
4. Get Average Score of student
5. Get Summary of All tests/Student
1

Score of Test 1 is 58
DO you want to continue then enter 1 for continue :1

1. What is the score of Exam #1? Enter 1
2. What is the score of Exam #2? Enter 2
3. What is the score of Exam #3? Enter 3
4. Get Average Score of student
5. Get Summary of All tests/Student
2

Score of Test 2 is 47
DO you want to continue then enter 1 for continue :1

1. What is the score of Exam #1? Enter 1
2. What is the score of Exam #2? Enter 2
3. What is the score of Exam #3? Enter 3
4. Get Average Score of student
5. Get Summary of All tests/Student
3

Score of Test 3 is 10
DO you want to continue then enter 1 for continue :1

1. What is the score of Exam #1? Enter 1
2. What is the score of Exam #2? Enter 2
3. What is the score of Exam #3? Enter 3
4. Get Average Score of student
5. Get Summary of All tests/Student
4

Average score of all tests is 38.333332
DO you want to continue then enter 1 for continue :1

1. What is the score of Exam #1? Enter 1
2. What is the score of Exam #2? Enter 2
3. What is the score of Exam #3? Enter 3
4. Get Average Score of student
5. Get Summary of All tests/Student
5

Average score of Test 1 =58,Test 2=47,Test 3=10 is 38.333332
DO you want to continue then enter 1 for continue :

*/