C code - 54 lines

Link:

C, pasted on Sep 16:

#include<stdio.h>
#include<conio.h>
#define MAX 100

void nhap (float 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("%f", &a[i]);
	}
}

void xuat(float a[], int n)
{
	for(int i = 0; i < n; i++)
	{
		printf("%8.3f", a[i]);
	}
}

float duongdautien(float a[], int n)
{
    for (int i=0; i<n; i++)
    {
         if (a[i]>0)
         {
             return a[i];
         }
    }
    return -1;
}
int main()
{
	int n;
	float a[MAX];
	nhap(a, n);
	xuat(a, n);

	float duongdau = duongdautien(a, n);
	printf("\nGia tri duong dau tien la %.3f", duongdau);

	getch();
	return 0;
}

Output:

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 'duongdautien':
Line 33: error: 'for' loop initial declaration used outside C99 mode

Create a new paste based on this one

Comments:

posted by Dgls on Feb 25

#include<iostream>
using namespace std;
void Nhap(int n, float a[]){
for(int i=0; i<n; i++){
cout<<"a["<<i<<"]=";
cin>>a[i];
}
}
float Giatri_duong_dau(int n, float a[]){
for (int i=0; i<n; i++){
if (a[i]>0){
return a[i];
break;
}
}
return -1;
}
main(){
int n;
cout<<"Nhap so phan tu cua mang: ";
cin>>n;
float a[n];
Nhap(n,a);
cout<<endl<<Giatri_duong_dau(n,a)<<endl;
}

posted by luongphongnhan on Oct 26

#include <iostream>
#include "math.h"

#define MAX 100

using namespace std;

void nhapMang(float arr[], int& n) {
do
{
cout << "Press num of interger: ";
cin >> n;
if (0 >= n || n > 100) {
system("cls");
cout << "Value of n is invalue!! Pls repress!!" << endl;
}
} while (n <= 0 || n > 100);
for (int i = 0; i < n; i++)
{
cout << "Press element for array: ";
cin >> arr[i];
}
}

void xuatMang(float arr[], int n) {
cout << "Arr imported is: " << endl;
for (int i = 0; i < n; i++)
{
cout << arr[i] << " ";
}
cout << endl;
}

int timSoDuong(float arr[], int n) {
for (int i = 0; i < n; i++)
{
if (arr[i] > 0) {
return arr[i];
}
}
return -1;
}

int main() {
int numOfArr;

float Arr[MAX];
nhapMang(Arr, numOfArr);
xuatMang(Arr, numOfArr);
cout << timSoDuong(Arr, numOfArr) << endl;
system("pause");
return 0;
}

posted by lehoangan01 on Feb 28

// Bài 135: Viết hàm tìm giá trị dương đầu tiên trong mảng 1 chiều các số thực. Nếu mảng không có giá trị dương thì trả về -1

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

void input_elements(float a[], int n){
do{
if (n < 0 || n > Max){
cout << "invalid number";
}
}while (n < 0 || n > Max);
for (int i = 0; i < n; i++){
printf("\nNhap a[%d]: ", i);
scanf("%f", &a[i]);
}
}

float find_the_first_positive_number_in_the_array(float a[], int n){
float pos;
for (int i = 0; i < n; ++i){
if (a[i] > 0){
pos = a[i];
break;
}
else{
pos = -1;
}
}
return pos;
}

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

float a[n];
input_elements(a, n);
int positive_number = find_the_first_positive_number_in_the_array(a, n);
cout << positive_number;

return 0;
}