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Câu 1: #include #include void nhapmang(int A[], int n){ for(int i=0;i} void xuatmang(int A[], int n){ for(int i=0;iprintf("\n"); } int ktranguyento(int n){ if(n<2) return 0; else{ for(int i=2;i<=n/2;i++) if(n%i==0) return 0; return 1; } }
void songuyento(int A[], int n){
printf("\nCac so nguyen to co trong mang la: \n");
for(int i=0;iif (ktranguyento(A[i])) printf("%5d", A[i]); } int ktrachinhphuong(int n){ if(n<1) return 0; int i=sqrt(n); if(i*i==n) return 1; return 0; }
void sochinhphuong(int A[], int n){
printf("\nCac so chinh phuong co trong mang la: \n");
for(int i=0;iif (ktrachinhphuong(A[i])) printf("%5d",A[i]); } int ktrahoanhao(int n){ int tam=0; for(int i=1;iif (n%i==0) tam=tam+i; } if (tam!=0 && tam==n) return 1; else return 0; }
void sohoanhao(int A[], int n){
printf("\nCac so hoan hao co trong mang la: \n");
for(int i=0;iif (ktrahoanhao(A[i])) printf("%5d",A[i]); } int ktrachiahetcho5(int n){ for(int i=0;iif(i%5==0) return 1; return 0; } }
void chiahetcho5(int A[], int n){
printf("\nCac so chia het cho 5 co trong mang la: \n");
for(int i=0;iif (ktrachiahetcho5(A[i])) printf("%5d",A[i]); } int main(){ int n; printf("Nhap so phan tu:"); scanf("%d",&n); int A[n]; printf("Nhap phan tu:\n"); nhapmang(A,n); printf("Mang vua nhap:\n"); xuatmang(A,n); songuyento(A,n); sochinhphuong(A,n); sohoanhao(A,n); chiahetcho5(A,n); } Câu 2: #include int main(){ int i, j, k ,l; for(i=1;i<4;i++) for(j=0;j<4;j++) for(k=0;k<4;k++) for(l=0;l<4;l++)
if((i!=j)&&(i!=k)&&(i!=l)&&(j!=k)&&(j!=l)&&(k!=l))
printf("%5d",i*1000+j*100+k*10+l); return 0; }