Help me, fix this simple program

[irmanfreestyle]

Guys, how i can use space in string?
try this code lest you know

#include<iostream>
#include<conio.h>
#include<string>
using namespace std;
main()
{
	char indeks[10];
	string name[100];
	int amount;
	int score[10];
	
	cout<<"Enter the number of students :";
	cin>>amount;
	for(int i=1;i<=amount;i++)
	{
		cout<<"Name:";
		getline(cin,name[i]);
		cout<<"Score :";
		cin>>score[i];
		
		if((score[i]<=100)&&(score[i]>80))
		{
			indeks[i]='A';
		}
		else if((score[i]<=79)&&(score[i]>=60))
		{
			indeks[i]='B';
		}
		else if((score[i]<=59)&&(score[i]>=40))
		{
			indeks[i]='C';
		}
		else if((score[i]<=39)&&score[i]>=10)
		{
			indeks[i]='D';
		}
		else
		{
			indeks[i]='E';
		}
	}
	for(int j=1;j<=amount;j++)
	{
		cout<<"Studen Name: "<<name[j]<<endl;
		cout<<"Score: "<<score[j]<<endl;
		cout<<"Indeks     : "<<indeks[j]<<endl;
	}
	getch();
	
}

[whitenite1]

@irmanfreestyle

Your going to be out of bounds in the indexs and score arrays, if the user picks an amount on line 13 that is 9 or higher since you've declared those two as 10, which is 0 to 9.

Also, could you explain what you mean by

how i can use space in string?

?

[irmanfreestyle]

@whitenite1
Sory bad english,
Why can not I enter a student name?
name input is not executed and straight to age
getline (cin, name)

[whitenite1]

@irmanfreestyle

Add cin.sync(); as a line right after line 16 to clear the input buffer. And you may want to raise all your arrays to be 100, so you don't go out of bounds on your arrays.

[mojtabaavahdati]

@irmanfreestyle

Use vectors instead. It's much better than simple arrays.

[Enoizat]

#include <iostream>
#include <string>
// #include<conio.h> <-- conio.h is not standard: better avoided

// using namespace std; <-- do you really need this?

int main()
{
    std::cout << "Enter the number of students (max 10): ";
    int amount {};
    std::cin >> amount;
    std::cin.ignore(1); // ignore the '\n' after the number
    
    char indeks[10];
    std::string name[10];
    int score[10];
    for(int i=0; i<amount; i++) // arrays start from 0
    {
        std::cout << "Name: ";
        std::getline(std::cin, name[i]); // <-- first position is name[0]
        std::cout << "Score (0-100): ";
        std::cin >> score[i];
        std::cin.ignore(1); // ignore the '\n' after the number
        
        if(score[i]>80)
        {
            indeks[i] = 'A';
        }
        else if((score[i]<=79) && (score[i]>=60))
        {
            indeks[i]='B';
        }
        else if((score[i]<=59) && (score[i]>=40))
        {
            indeks[i]='C';
        }
        else if((score[i]<=39) && score[i]>=10)
        {
            indeks[i]='D';
        }
        else
        {
            indeks[i]='E';
        }
    }

    for(int j=0; j<amount; j++)
    {
        std::cout << "Student name: "<< name[j]
                  << "; Score: " << score[j]
                  << "; Indeks: " << indeks[j] << '\n';
    }
    // getch(); <-- non standard: better avoided
    std::cout << "\nPress ENTER to continue...\n";
    std::cin.ignore(std::numeric_limits<std::streamsize>::max(), '\n');
}

note: to prevent console from closing after code execution:
http://www.cplusplus.com/forum/beginner/1988/