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Tim_Vi_Tri.cpp
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// Tim_Vi_Tri.cpp #include <iostream> using namespace std; void nhap_mang(float a[], int &n) { float x; do { cout<<"a["<<n<<"] = "; cin>>x; if (x != -1 && n < 100) { a[n] = x; n++; } } while (x != -1 && n < 100); cout<<"Da nhap "<<n<<" phan tu"<<endl; } void hien_thi(float a[], int n) { cout<<"\nMang a: "<<endl; for (int i = 0; i < n; i++) { cout<<"\t"<<a[i]; } } void tim_vi_tri(float a[], int n) { float x; int dem = 0; float b[100]; cout<<"\nNhap x: "; cin>>x; for (int i = 0; i < n; i++) { if (a[i] == x) { b[dem] = i; dem++; } } cout<<"\nGia tri "<<x<<" xuat hien "<<dem<<" lan"<<endl; cout<<"\nTai cac vi tri: "<<endl; for (int i = 0; i < dem; i++) cout<<"\t"<<b[i]; } int main() { int n; float a[100]; nhap_mang(a,n); hien_thi(a,n); tim_vi_tri(a,n); return 0; }