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#include<stdio.h> #include<conio.h> #include<math.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]); } } /* n = 6.9 phannguyen = (int)(6.9) = 6 phan le = 6.9 - 6 = 0.9 */ void ThaySoGanNhat(float &n) { int phannguyen = (int)(n); float phanle = n - phannguyen; // làm tròn if(phanle <= 0.5) { n = (float)phannguyen; } else { n = (float)phannguyen + 1; } } // Giống như làm tròn void ThayCacPhanTuTrongMangBangSoNguyenGanNoNhat(float a[], int n) { for(int i = 0; i < n; i++) { ThaySoGanNhat(a[i]); } } int main() { int n; float a[MAX]; nhap(a, n); xuat(a, n); ThayCacPhanTuTrongMangBangSoNguyenGanNoNhat(a, n); printf("\nMang sau khi lam tron: "); xuat(a, n); getch(); return 0; }
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