C, pasted on Sep 21:
 ```1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 ``` ```#include #include #include #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]); } } int timvitriamdau(float a[], int n) { int vitri = -1; for(int i = 0; i < n; i++) { if(a[i] < 0) { vitri = i; break; } } return vitri; } float vitriamlonnhat(float a[], int n, int vitriamdau) { for (int i = vitriamdau + 1; i < n; i++) { if (a[i] < 0 && a[i] > a[vitriamdau]) { vitriamdau = i; } } return vitriamdau; } int main() { int n; float a[MAX]; nhap(a, n); xuat(a, n); int vitriamdau = timvitriamdau(a, n); if(vitriamdau == -1) { printf("\nMang khong co so am"); } else { int vitri = vitriamlonnhat(a, n, vitriamdau); printf("\nVi tri phan tu am lon nhat trong mang: %d",vitri); } getch(); return 0; } ```

Output:
 ```1 2 3 4 5 6 7 8 ``` ```Line 17: error: conio.h: No such file or directory Line 6: error: expected ';', ',' or ')' before '&' token In function 'xuat': Line 26: error: 'for' loop initial declaration used outside C99 mode In function 'timvitriamdau': Line 35: error: 'for' loop initial declaration used outside C99 mode In function 'vitriamlonnhat': Line 48: error: 'for' loop initial declaration used outside C99 mode ```

chỉ tìm một vị trí thôi à

chỉ tìm một vị trí thôi à

#include <iostream>

using namespace std;

void nhapmang(float a[],int n){
for(int i=0;i<n;i++){
cout<<"a["<<i<<"] = ";
cin>>a[i];
}
}
float ketqua(float a[],int n){
float s=0,x;
for(int i=0;i<n;i++){
if(a[i]<0 && a[i]<s){
s=a[i];
x=i+1;
}
}

if(s!=0){
return x;
}return -1;
}

int main()
{
float a[100];
int n;
cout<<"nhap n : ";
cin>>n;
nhapmang(a,n);
cout<<"ket qua la : "<<ketqua(a,n);

return 0;
}