Project v0.12, C (gcc)

Project v0.12

//gcc 5.4.0

#include  <stdio.h>
#include <string.h>
#include <stdlib.h>
typedef struct{
   char firstname[20];
   char lastname[20];
}name;
struct record{
    int student_ID;
    name studentname;
    char Grade;
    char Major[10];
};
int printone(struct record records[],int N){
      printf("Please input # from 0-%d",N-1);
      int i=0;
      scanf("%d",&i);
          printf("Student ID #: %d\n",records[i].student_ID);
          printf("Name: %s %s\n",records[i].studentname.firstname,records[i].studentname.lastname);
          printf("Grade: %c\n",records[i].Grade);
          printf("Major: %s\n",records[i].Major);
                         return 0;
                                     }
int printall(struct record records[],int N){
    printf("Hi\n");
    int i=0;
    for(i=0;i<N;i++){
            printf("Student ID #: %d\n",records[i].student_ID);
            printf("Name: %s %s\n",records[i].studentname.firstname,records[i].studentname.lastname);
            printf("Grade: %c\n",records[i].Grade);
            printf("Major: %s\n",records[i].Major);
                     }        
                         return 0;
                                    }
int printCS(struct record records[],int N){
      int i;
      for(i=0;i<N;i++){
          if(records[i].Major=="CS"){
               printf("Student ID #: %d\n",records[i].student_ID);
               printf("Name: %s %s\n",records[i].studentname.firstname,records[i].studentname.lastname);
               printf("Grade: %c\n",records[i].Grade);
               printf("Major: %s\n",records[i].Major);
                                     }
                      }
                          return 0;
                                    }
int printECO(struct record records[],int N){
      int i;
      for(i=0;i<N;i++){
              if(records[i].Major=="Eco"){
                  printf("Student ID #: %d\n",records[i].student_ID);
                  printf("Name: %s %s\n",records[i].studentname.firstname,records[i].studentname.lastname);
                  printf("Grade: %c\n",records[i].Grade);
                  printf("Major: %s\n",records[i].Major);
                                         }            
                      }
                          return 0;
                                     }
int printGrade(struct record records[],int N){
      printf("Please input LetterGrade");
      char Gradecheck;
      scanf("%c",&Gradecheck);
      int i;
      for(i=0;i<N;i++){
          if(records[i].Grade==Gradecheck){
            printf("Student ID #: %d\n",records[i].student_ID);
            printf("Name: %s %s\n",records[i].studentname.firstname,records[i].studentname.lastname);
            printf("Grade: %c\n",records[i].Grade);
            printf("Major: %s\n",records[i].Major);
                                          }
                      }
                          return 0;
                                      }
int printID(struct record records[], int N){
      printf("Please input Student's ID #\n");
          int id=0;
          int i=0;
          scanf("%d",&id);
          for(i=0;i<N;i++){
              if(records[i].student_ID==id)
                        break;
                          }
            printf("Student ID #: %d\n",records[i].student_ID);
            printf("Name: %s %s\n",records[i].studentname.firstname,records[i].studentname.lastname);
            printf("Grade: %c\n",records[i].Grade);
            printf("Major: %s\n",records[i].Major);
                        return(0);
                                      }
  
int main()
{
int N=10;
    struct record records[N];
//        records==(struct record*)malloc(N*sizeof(record));
    records[0].student_ID=1001;
    strcpy(records[0].studentname.firstname,"Clock");
    strcpy(records[0].studentname.lastname,"Explosion");
    strcpy(records[0].Grade,"A");
    strcpy(records[0].Major,"CS");
    
    records[1].student_ID=1002;
    strcpy(records[1].studentname.firstname,"Van");
    strcpy(records[1].studentname.lastname,"Gogh");
    strcpy(records[1].Grade,"C");
    strcpy(records[1].Major,"EE");
    
    records[2].student_ID=1003;
    strcpy(records[2].studentname.firstname,"Paul");
    strcpy(records[2].studentname.lastname,"Michelangelo");
    strcpy(records[2].Grade,"B");
    strcpy(records[2].Major,"Stat");
    
    records[3].student_ID=1004;
    strcpy(records[3].studentname.firstname,"Salvador");
    strcpy(records[3].studentname.lastname,"Dali");
    strcpy(records[3].Grade,"D");
    strcpy(records[3].Major,"Eco");
    
    records[4].student_ID=1005;
    strcpy(records[4].studentname.firstname,"William");
    strcpy(records[4].studentname.lastname,"Joe");
    strcpy(records[4].Grade,"B");
    strcpy(records[4].Major,"Eco");
    
    records[5].student_ID=1006;
    strcpy(records[5].studentname.firstname,"Mary");
    strcpy(records[5].studentname.lastname,"Raphael");
    strcpy(records[5].Grade,"C");
    strcpy(records[5].Major,"Math");
    
    records[6].student_ID=1007;
    strcpy(records[6].studentname.firstname,"John");
    strcpy(records[6].studentname.lastname,"Scher");
    strcpy(records[6].Grade,"A");
    strcpy(records[6].Major,"Mec");
    
    records[7].student_ID=1008;
    strcpy(records[7].studentname.firstname,"Rahul");
    strcpy(records[7].studentname.lastname,"Patel");
    strcpy(records[7].Grade,"B");
    strcpy(records[7].Major,"Eco");
    
    records[8].student_ID=1009;
    strcpy(records[8].studentname.firstname,"Claude");
    strcpy(records[8].studentname.lastname,"Monet");
    strcpy(records[8].Grade,"C");
    strcpy(records[8].Major,"CS");
    
    records[9].student_ID=1010;
    strcpy(records[9].studentname.firstname,"Gustav");
    strcpy(records[9].studentname.lastname,"Klimt");
    strcpy(records[9].Grade,"A");
    strcpy(records[9].Major,"CS");
    
    printall(records,N);
    printone(records,N);
    printECO(records,N);
    printGrade(records,N);
    printID(records,N);
    
    //printf("HI");
    //printone(records,N)
    
}


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