Về thuật toán đổi các cơ số các bạn có thể xem trên mạng, tuy nhiên chương trình sau sẽ thực hiện đổi số hệ 10 sang hệ 2, 8, 16 và in ra theo đúng dạng chúng ta vẫn làm.
Thực hiện trên dev-C
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| #include <stdio.h>#include <stdlib.h>#include <string.h>#include <ctype.h>#include <windows.h>#define d 179//186#define ng 196//205#define gi 197//206#define swap(type, a, b) {type temp = a; a= b; b =temp;}void gotoxy(int x, int y) // chuyen con tro toi (x,y){ static HANDLE h = NULL; if(!h) h = GetStdHandle(STD_OUTPUT_HANDLE); COORD c = { x, y }; SetConsoleCursorPosition(h,c);}void reverse(char s[]) // dao nguoc xau{ int i; for (i=0; i<strlen(s)/2; i++) swap(char, s[i], s[strlen(s)-i - 1]);}int main(){ int a, n; int x, y = 3, sys, i, l1, l2, count; char s1[100], s2[100], s[100], result[1000]; char again; char *syschar = (char*) malloc(20*sizeof(char)); begin: x = 4, sys = 2, i, l1 = 0, l2 = 0, count =0; printf("Enter number want convert : "); scanf("%d", &n); a = n; do { printf("Enter number system (2,8,16): "); scanf("%d", &sys); }while (sys != 2 && sys != 8 && sys != 16); if (sys == 2) strcpy(syschar, "01"); //syschar = "01"; else if (sys == 8) strcpy(syschar, "01234567"); else if (sys == 16) strcpy(syschar, "0123456789ABCDEF"); gotoxy(x, y); printf("%d",n); while (n>0) { sprintf(s1,"%-2d", n); // chuyen n sang xau s1 sprintf(s2,"%-2d",n/sys); // chuyen n/sys sang xau s2 result[count] = syschar[n%sys]; // cong phan du vao kq l1 = strlen(s1); l2 = strlen(s2); gotoxy(x + l1, y); printf(" %c %d",d, sys); // in | va co so gotoxy(2, ++y); if (count>0) printf("%c", d); // in mu ten gotoxy(x, y); for (i=0; i<l1 + 3 + l2; i++) // in ------- if (i==l1+1) printf("%c", gi); else printf("%c", ng); gotoxy(2, ++y); if (count==0) printf("%c",30); // in duong thang dung cua mui ten else printf("%c", d); gotoxy(x, y); for (i = 0; i<l1-2; i++) // in khoang trong truoc so du printf(" "); sprintf(s,"%-2d %c %s", n%sys, d, s2); // in so du va thuong printf("%-2d %c %s", n%sys, d, s2); x += l1-2 + strlen(s) - l2; // tang x den vi tri moi n /=sys; count++; } y+=7; result[count] = '\0'; reverse(result); printf("\n\n%d(10) = %s(%d)",a, result, sys); printf("\nDo you want continue? (y/n)"); fflush(stdin); again = getchar(); again = toupper(again); if (again == 'Y') goto begin; free(syschar); return 0;} |
Thực hiện trên terminal Linux
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| #include <stdio.h>#include <stdlib.h>#include <string.h>#include <ctype.h>#define d 124//179//186#define ng 45//196//205#define gi 124//197//206#define gotoxy(type, x, y) printf("%c[%d;%df",0x1B,x, y)#define swap(type, a, b) {type temp = a; a= b; b =temp;}void reverse(char s[]) // dao nguoc xau{ int i, l = strlen(s)/2; for (i=0; i<l; i++) swap(char, s[i], s[strlen(s)-i - 1]);}int main(){ int a, n; int x = 4, y, sys, i, l1, l2, count; char s1[100], s2[100], s[100], result[1000]; char again; char *syschar = (char*) malloc(20*sizeof(char)); do { y = 5; sys = 2; l1 = 0; l2 = 0; count =0; printf("Enter number want convert : "); scanf("%d", &n); a = n; do { printf("Enter number system (2,8,16): "); scanf("%d", &sys); }while (sys != 2 && sys != 8 && sys != 16); if (sys == 2) strcpy(syschar, "01"); //syschar = "01"; else if (sys == 8) strcpy(syschar, "01234567"); else if (sys == 16) strcpy(syschar, "0123456789ABCDEF"); gotoxy(int, x, y); printf("%d",n); while (n>0) { sprintf(s1,"%-2d", n); // chuyen n sang xau s1 sprintf(s2,"%-2d",n/sys); // chuyen n/sys sang xau s2 result[count] = syschar[n%sys]; // cong phan du vao kq l1 = strlen(s1); l2 = strlen(s2); gotoxy(int, x , y + l1); printf(" %c %d",d, sys); // in | va co so gotoxy(int, ++x, 2); if (count>0) printf("%c", d); // in mu ten gotoxy(int, x, y); for (i=0; i<l1 + 3 + l2; i++) // in ------- if (i==l1+1) printf("%c", gi); else printf("%c", ng); gotoxy(int, ++x, 2); if (count==0) printf("%c",'^'); // in duong thang dung cua mui ten else printf("%c", d); gotoxy(int, x, y); for (i = 0; i<l1-2; i++) // in khoang trong truoc so du printf(" "); sprintf(s,"%-2d %c %s", n%sys, d, s2); // in so du va thuong printf("%-2d %c %s", n%sys, d, s2); y += l1-2 + strlen(s) - l2; // tang x den vi tri moi n /=sys; count++; } x += 7; result[count] = '\0'; reverse(result); printf("\n\n%d(10) = %s(%d)",a, result, sys); printf("\nDo you want continue? (y/n)"); fgets (s,256,stdin); scanf("%c", &again); again = toupper(again); }while (again == 'Y');// goto begin; |