#include <stdio.h>
#include <stdlib.h>
#include <string.h>

//FUNCTIONS
void mainMenu();
void readStudent();
void delay();
//STRUCTS

int main(int argc, char const *argv[])
{

	//readStudent();

 	delay(2000);
	mainMenu();
	return 0;
}
void mainMenu(){
	int opt;
	printf("******************************************\n");
	printf("Select from the options:\n");
	printf("******************************************\n");
	printf("¬[1] Print my enrollment certificate\n");
	printf("¬[2] Print my courses\n");
	printf("¬[3] Print my transcript\n");
	printf("¬[4] Print my GPA\n");
	printf("¬[5] Print my ranking among all students in the college\n");
	printf("¬[6] List of all available courses\n");
	printf("¬[7] List of all students\n");
	printf("¬[8] Logout\n");
	printf("¬[9] Exit\n");
	printf("******************************************\n");
	printf("Enter the number corresponding to each item to proceed:\n");
	scanf("%d",&opt);
	switch(opt){
		case 1:
				printf("Dear Sir/Madam,\n\n");
				printf("This is to certify that Mr. [Peter Brown] with student id [7813007] is a student at grade 1 at CICCC. He\n");
				printf("was admited to our college in 2011 and has taken [1] course(s). Currently he resides at [850 West Vancouver, Vancouver]\n\n\n");
				printf("If you have any questions, please do not hesitate to contact us.\n");
		break;
		case 2:
				printf("Hi Mr. [Peter Brown],\n");
				printf("You have taken the following courses:\n");

		break;
		case 3:
				printf("Hi Mr. [Peter Brown],\n");
				printf("Here is your transcript:\n\n");
		break;
		case 4:
				printf("Hi Mr. [Peter Brown],\n");
				printf("Your GPA is:\n\n");
		break;
		case 5:
				printf("Hi Mr. [Peter Brown],\n");
				printf("Your GPA is:[] and therefore your rank is []\n\n");
		break;
		case 6:

		break;
		case 7:

		break;
		case 8:

		break;
		case 9:
			exit(1);
		break;
		default:
		printf("Wrong Option, please try again!\n");
	}

}

void readStudent(){
//    char com[] = "User:”";
    char file_name[] = "/home/carlos/Desktop/Project/Accounts.txt";
    //    strcat( domain , file_name);

    FILE *fp;
    char s[100];
    char userdata[100][100];
    char s_user[] = "User:";
    char s_pass[] = "Pass:";
    char *p;

    char str3[128] = "";
    char *p1, *p2;
    size_t len,len2;

    fp = fopen( file_name, "r" );
    if( fp == NULL ){
        printf( "%sIt's not opend file!\n", file_name );
        exit(1);
    }

    int i = 0;
    while( fgets( s, 100, fp ) != NULL ){
        p = strstr(s, s_user);
        if(p == NULL){
        }else{
            p1 = s;
            len = strlen(s_user);
            while((p2 = strstr(p1,s_user)) != NULL) { // 削除文字列がなくなるまでループ
                strncat(str3,p1,p2 - p1); // 削除文字列を除いて連結
                p1 = p2 + len; // ポインタの更新
            }

            strncpy( userdata[i], p1+1, 7 ); //p1の先頭+3の位置から5文字をusenumにコピー
            userdata[i][7] = '\0'; //でも文字数指定って..だめなきがする
            i++;
        }
    }

    fclose( fp );

    for (int a = 0; a < 15; a++) {
        printf( "%d :%s \n", a, userdata[a] );
    	}
    }

   void delay(int x){
   	int c = 1, d = 1;

    for ( c = 1 ; c <= x ; c++ )
       for ( d = 1 ; d <= 200000 ; d++ )
       {}
   }