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Link: http://codepad.org/ujppAi9b    [ raw code | output | fork | 2 comments ]

C, pasted on Sep 16:
#include<stdio.h>
#include<conio.h>
#define MAX 100

void nhap (int a[], int &n)
{
	do
	{
		printf("\nNhap so phan tu: ");
		scanf("%d", &n);
		if(n <= 0 || n > MAX)
		{
			printf("\nSo phan tu khong hop le. Xin kiem tra lai !");
		}
	}while(n <= 0 || n > MAX);
	for(int i = 0; i < n; i++)
	{
		printf("\nNhap a[%d]: ", i);
		scanf("%d", &a[i]);
	}
}

void xuat(int a[], int n)
{
	for(int i = 0; i < n; i++)
	{
		printf("%4d", a[i]);
	}
}

int timvitrichandau(int a[], int n)
{
	for(int i = 0; i < n; i++)
	{
		if(a[i] % 2 == 0)
		{
			return i;
		}
	}
	return -1;
}

int main()
{
	int n;
	int a[MAX];
	nhap(a, n);
	xuat(a, n);

	int vitrichandau = timvitrichandau(a, n);
	printf("\nVi tri chan dau la %d", vitrichandau);

	getch();
	return 0;
}


Output:
1
2
3
4
5
6
Line 17: error: conio.h: No such file or directory
Line 5: error: expected ';', ',' or ')' before '&' token
In function 'xuat':
Line 25: error: 'for' loop initial declaration used outside C99 mode
In function 'timvitrichandau':
Line 33: error: 'for' loop initial declaration used outside C99 mode


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Comments:
posted by luongphongnhan on Oct 27
#include<iostream>
#define MAX 100
using namespace std;

void nhapMang(int* arr, int& n) {
do
{
cout << "Moi nhap so phan tu cua mang: ";
cin >> n;
if (0 >= n || n> 100) {
cout << "So phan tu trong mang khong hop le:" << endl;
}
} while (0 >= n || n > 100);
for (int i = 0; i < n; i++)
{
cout << "Moi nhap phan tu thu " << i << " trong mang: ";
cin >> arr[i];
}
}

void xuatMang(int* arr, int n) {
cout << "Mang vua nhap la: " << endl;
for (size_t i = 0; i < n; i++)
{
cout << arr[i] << " ";
}
cout << endl;
}

int timChanDauTien(int* arr, int n) {
int chanDauTien = -1;
for (int i = 0; i < n; i++)
{
if (arr[i] % 2 == 0) {
return arr[i];
}
}
return chanDauTien;
}

int main() {
int numOfArr;
int* Arr = new int[MAX];
nhapMang(Arr, numOfArr);
xuatMang(Arr, numOfArr);
cout << "Gia tri chan dau tin cua mang: " << timChanDauTien(Arr, numOfArr) << endl;
system("pause");
return 0;
}
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posted by lehoangan01 on Mar 17
// Bài 138: Tìm vị trí của giá trị chẵn đầu tiên trong mảng 1 chiều các số nguyên. Nếu mảng không có giá trị chẵn thì sẽ trả về -1

#include <iostream>
#include <math.h>
using namespace std;
#define Max 100

void input_the_array(int a[], int n){
do{
if(n < 0 || n > Max){
cout << "invalid value return";
}
}while(n < 0 || n > Max);
for (int i = 0; i < n; i++){
printf("\ninput the value of a[%d]: ",i);
scanf("%i", &a[i]);
}
}

int check_the_even_number(int a[], int n){
int eve;
for (int i = 0; i < n; i++){
if (a[i] % 2 == 0){
eve = a[i];
break;
}
else{
eve = -1;

}
}
return eve;
}

int main(){
int n;
printf("\nNhap so phan tu: ");
scanf("%d", &n);

int a[n];
input_the_array(a, n);
int d = check_the_even_number(a, n);
cout << " the first even number: " << d << endl;
return 0;
}

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