At Valence community college, a student can’t take more than 3 coursesunder the constraint of having no more than 7 credit hours. The purpose ofthis assignment is to construct a fee invoice for a student. This requiresthe input of Student’s id as integer and the course numbers. It costs 120.25 dollars per credit hour in addition to $35.00 charged forhealth and id services. In this project, functions must be used (noredundant code is allowed this time)Add functions as you see fit. Bottom line: Have the cleanest(minimum lines of code possible) program.

//C program

#include<stdio.h>

#include<string.h>

struct data{

  int CRN;

  char Prefix[10];

  int hour;

};

void printInvoice(int id){

  float price=0;

              printf("\t\tVELENCE COMMUNITY COLLEGE\n\t\t\tORLANDO FL 10101\n");

              printf("\t\t\n\n");

              printf("\t\t Fee invoice prepared for student V%d\n\n",id);

              printf("\t\t 1 credit Hour =$120.25\n\n");

              printf("\t\tCRN\tCR_PREFIX\tCR_HOURS\n");

              printf("\n\t\t\t Health & id fees $ 35.00\n\n");

              printf("\t\t\n");

              printf("\t\t\t Total payments\t$ %.2f\n\n",price+35);

}

int main(){

  struct data d[12];

  d[0].CRN=4587;

  strcpy(d[0].Prefix ,"MAT 236");

  d[0].hour = 4;

  d[1].CRN=4599;

  strcpy(d[1].Prefix,"COP 220");

  d[1].hour = 3;

  d[2].CRN=8997;

  strcpy(d[2].Prefix,"GOL 124");

  d[2].hour = 1;

  d[3].CRN=9696;

  strcpy(d[3].Prefix,"COP 100");

  d[3].hour = 5;

  d[4].CRN=4580;

  strcpy(d[4].Prefix,"MAT 230");

  d[4].hour = 3;

  d[5].CRN=4581;

  strcpy(d[5].Prefix,"MAT 231");

  d[5].hour = 4;

  d[6].CRN=4582;

  strcpy(d[6].Prefix,"MAT 232");

  d[6].hour = 2;

  d[7].CRN=4583;

  strcpy(d[7].Prefix,"MAT 233");

  d[7].hour = 2;

  d[8].CRN=3587;

  strcpy(d[8].Prefix,"MAT 256");

  d[8].hour = 4;

  d[9].CRN=4519;

  strcpy(d[9].Prefix,"COP 420");

  d[9].hour = 3;

  d[10].CRN=6997;

  strcpy(d[10].Prefix,"GOL 127");

  d[10].hour = 1;

  d[11].CRN=9494;

  strcpy(d[11].Prefix,"COP 101");

  d[11].hour = 3;

  char choice;

  int id,num,i,j,not_found;

  while(1){ not_found=0;

      printf("Enter student id\n");

      scanf("%d",&id);

      printf("Enter how many courses upto 3\n");

      scanf("%d",&num);

      if(num>3||num<=0){

          printf("Invalid number of course\n");

          printInvoice(id);

      }

      else{

          printf("Enter the %d course numbers \n",num);

          int course[num];

          for(i=0;i<num;i++){

              scanf("%d",&course[i]);

          }

          int total_hour=0;

          for(i=0;i<num;i++){

              for(j=0;j<12;j++){

                  if(d[j].CRN==course[i]){

                      total_hour+=d[j].hour;

                      break;

                  }

              }

              if(j==12){

                  not_found=1;

                  break;

              }

          }

          if(not_found){

              printf("invalid crn(s)\n\n");

          }

          else{

              if(total_hour>7){

              printf("Sorry,we cannot process more than seven hour\n\n");

          }

          else{

              float price=0;

              printf("\t\tVELENCE COMMUNITY COLLEGE\n\t\t\tORLANDO FL 10101\n");

              printf("\t\t\n\n");

              printf("\t\t Fee invoice prepared for student V%d\n\n",id);

              printf("\t\t 1 credit Hour =$120.25\n\n");

              printf("\t\tCRN\tCR_PREFIX CR_HOURS\n");

              for(i=0;i<num;i++){

                  printf("\t\t%d\t",course[i]);

                  for(j=0;j<12;j++){

                      if(course[i]==d[j].CRN){

                          printf("%s\t\t%d\t$ %f\n",d[j].Prefix,d[j].hour,d[j].hour*120.25);

                          price+=d[j].hour*120.25;

                          break;

                      }

                  }

              }

              printf("\n\t\t\t\t Health & id fees $ 35.00\n\n");

              printf("\t\t\n");

              printf("\t\t\t Total payments\t\t$ %.2f\n\n",price+35);

          }

          }

      }

      printf("Would you like to print another invoice ? Y=yes N=no\n\n");

      scanf(" %c",&choice);

      if(choice=='Y')continue;

      if(choice=='N')break;

      printf("Invalid choice\n");

      break;  

  }

  printf("\ngoodbye!");

  return 0;

}

Explanation: