Các bài tập C căn bản

Chia sẻ: Ptit Ptit | Ngày: | Loại File: DOC | Số trang:28

Thêm vào BST

Báo xấu

639
lượt xem 225
download

Download Vui lòng tải xuống để xem tài liệu đầy đủ

Tài liệu tham khảo chuyên chuyên môn quản trị mạng - Các bài tập C căn bản

Chủ đề:

Bình luận(0) Đăng nhập để gửi bình luận!

Lưu

Nội dung Text: Các bài tập C căn bản

CÁc bài tập C căn bản P4 --------------------------------- /* Bai tap 1_93 - In tat ca cac uoc so cua so n */ #include #include void main() { int n, i; printf("Cho gia tri N = "); scanf("%d", &n); printf("Cac uoc so cua %d la :\n", n); for (i=1; im) n -= m; else m -= n; if (n == 0) return m; else return n; } unsigned BSCNN (unsigned n, unsigned m) { return n * m / USCLN(n, m); } void main() { unsigned n, m; printf("\nNhap hai vao so nguyen duong : "); scanf("%u%u", &n, &m);
printf("\nUSCLN cua %u va %u = %u", n, m, USCLN(n,m)); printf("\nBSCNN cua %u va %u = %u", n, m, BSCNN(n,m)); getch(); } ---------------------------- /* Xem tap tin cho phep cuon */ #include #include void main() { FILE *fp; char filename[50], s[255], *hang[1000], c; int nline = 0, line = 0, i; printf("\nNhap ten tap tin muon xem : "); gets(filename); if ((fp = fopen(filename,"r")) == NULL) printf("\nKhong the mo tap tin %s", filename); else { while (!feof(fp)) { fgets(s, 255, fp); hang[nline] = (char *)malloc(strlen(s)); strcpy(hang[nline], s+1); nline++; } do { clrscr(); i = line; while (i
} } while (c != 27); fclose(fp); } } --------------------------- /* Bai tap 9_5 - Tim so tu trong chuoi */ #include #include #include #pragma warn -pia char *trim(char *chuoi) { char *p; while (p = strstr(chuoi, " ")) memmove(p, p+1, strlen(chuoi) - (p - chuoi)); if (chuoi[0] == ' ') memmove(chuoi, chuoi+1, strlen(chuoi) - 1); if (chuoi[strlen(chuoi)-1] == ' ') chuoi[strlen(chuoi)-1] = 0; return chuoi; } void main() { char chuoi[125]; int i = 0, count = 0; printf("\nNhap chuoi mau : "); textattr(0x1e); gets(chuoi); trim(chuoi); if (strlen(chuoi)) { while(chuoi[i] != 0) if (chuoi[i++] == ' ') count++; count++; } printf("\nSo tu co trong chuoi : %d", count); getch(); } -------------------------------------- --------------------------------
#include void main() { char s[100]; int i; printf("\nNhap vao mot chuoi : "); gets(s); i = 0; while (s[i] != 0) { if (isalpha(s[i])) if (s[i] < 97) s[i] += 32; else s[i] -= 32; i++; } printf("\nChuoi bien thanh : %s", s); getch(); } --------------------------------------- /* Bai tap 5_3 - Tim phuong an doi tien */ #include #define TONGSOTIEN 300000 void main() { long i, j, k, l, m, count=0, soluong = 0; for (i=0; i
/* Bai tap 9_4 - Tim chuoi doi xung */ void main() { char chuoi[125]; int i = 0, j; printf("\nNhap vao chuoi kiem tra : "); gets(chuoi); j = strlen(chuoi) - 1; while(chuoi[i++] == chuoi[j--]) ; if (--i>=++j) printf("Chuoi doi xung"); else printf("Chuoi khong doi xung"); getch(); } ------------------------------------------ /* Bai tap 1_87 - Demo ve hop dung conio */ #include #include #include char doublebox[] ="ÉÍ»ºÈ¼"; char singlebox[] ="ÚÄ¿³ÀÙ"; void swap(int *x, int *y) { int temp; temp = *y; *y = *x; *x = temp; } void drawbox(int x1, int y1, int x2, int y2, int type) { char *boxtype; int i; if (type == 2) boxtype = doublebox; else boxtype = singlebox; gotoxy(x1,y1); cprintf("%c", boxtype[0]); for (i=x1 + 1; i < x2; i++)
cprintf("%c", boxtype[1]); cprintf("%c", boxtype[2]); for (i=y1+1; ix2) swap(&x1, &x2); if (y1>y2) swap(&y1, &y2); textattr(color); window(x1, y1, x2, y2); clrscr(); window(1,1,80,25); drawbox(x1, y1, x2, y2, type); } void main() { int x1, y1, x2, y2, type, color; cprintf("\n\rDRAWBOX DEMO.\n\rPress any key to begin..."); getch(); randomize(); while (!kbhit()) { x1 = random(80); do { x2 = random(80); } while (x1 == x2); y1 = random(25); do { y2 = random(25); } while (y1 == y2); type = random(2) + 1; color = random(256); drawbox_color(x1,y1,x2,y2,type,color);
delay(100); } } ----------------------------------------- #include void main() { double fahrenheit, celsius; printf("\nNhap gia tri do Fahrenheit : "); scanf("%lf", &fahrenheit); if (fahrenheit != 32.0) { celsius = 5.0 * (fahrenheit-32.0) / 9.0 ; printf("Do Celsius tuong ung = %5.2lf", celsius); } getch(); } ---------------------------------------- /* Bai tap 1_21 - In day so Fibonanci */ #include void main() { int n, i, fib1 = 1, fib2 = 1, fib = 2; printf("\nNhap gia tri N : "); scanf("%d", &n); printf("%d %d ", fib1, fib2); while (fib1+fib2 < n) { fib = fib1 + fib2; printf("%d ", fib); fib2 = fib1; fib1 = fib; } getch(); } ------------------------------------ /* Bai tap 1_68 - Tap hop thong tin */ #include void main() { char s[100], s1[100], s2[100], filename1[50], filename2[50];
FILE *fp1, *fp2; printf("\nCho viet ten tap tin thu nhat : "); gets(filename1); if ((fp1 = fopen(filename1, "w+")) == NULL) printf("\nKhong the tao tap tin %s", filename1); else { printf("\nCho viet ten tap tin thu nhat : "); gets(filename2); if ((fp2 = fopen(filename2, "w+")) == NULL) printf("\nKhong the tao tap tin %s", filename2); else { do { printf("\nHo ten (ENTER de ket thuc) : "); gets(s); if (strlen(s) > 0) { strcat(s, "\n"); fputs(s, fp1); printf("\nTuoi : "); gets(s); strcat(s, "\n"); fputs(s, fp1); printf("\nDia chi : "); gets(s); strcat(s, "\n"); fputs(s, fp1); } } while (strlen(s) > 0); fclose(fp1); fp1 = fopen(filename1, "r"); while (fgets(s, 100, fp1) != NULL) { fgets(s1, 100, fp1); fgets(s2, 100, fp1); s[strlen(s)-1] = 0; s1[strlen(s1)-1] = 0; fprintf(fp2, "%s %s %s", s, s1, s2); } fclose(fp2); } } } ------------------------------------------
/* Bai tap 1_86 - Doc va ghi len file mot mang 2 chieu 10x10 */ #include #define MAX 10 char filename[] = "MANG1010.DAT"; void main() { int mang[MAX][MAX], i, j; FILE *fp; if ((fp = fopen(filename, "w+")) == NULL) printf("\nKhong the tao tap tin %s", filename); else { printf("\nNhap cac phan tu cua mang : "); for (i=0; i
int n; printf("\nNhap vao gia tri N : "); scanf("%d", &n); printf("%d! = %lu", n, giaithua(n)); getch(); } ---------------------------------- #include void main() { int a[10], i; printf("\nNhap vao 10 phan tu nguyen cua day : "); for (i=0; i
void main() { unsigned long nguyento[MAX], i, j, l, k=0, n; for (i=1; i
#include void main() { unsigned number; char hex[] = "0123456789ABCDEF"; printf("\nNhap vao mot gia tri nguyen duong 16 bit : "); scanf("%u", &number); printf("Gia tri Hex tuong ung = %c%c%c%c", hex[number/0x1000], hex[(number/0x100)%0x10], hex[(number/0x10)%0x10], hex[number%0x10]); getch(); } -------------------------------------------- #include #include void main(int argc, char *argv[]) { FILE *fp; char s[255]; if (argc
printf("\nCach su dung : \nHienfile "); else if ((fp = fopen(argv[1], "r")) == NULL) printf("\nKhong the mo tap tin %s", argv[1]); else { while ((c = fgetc(fp)) != EOF) putc(c, stdout); } getch(); } -------------------------------------- /* Bai tap 1_15 - Tinh dien tich cac hinh hoc */ #include #include #include int menu() { int c; printf("\n----- Menu -----"); printf("\n1. Hinh tam giac"); printf("\n2. Hinh tron"); printf("\n3. Hinh vuong"); printf("\n4. Hinh chu nhat"); printf("\n0. Thoat"); printf("\n----------------"); printf("\nChon muc : "); do { c = getch(); } while (c>'4' || c
} void hinhtron() { int r; printf("\n\nNhap vao ban kinh hinh tron : "); scanf("%d", &r); printf("\nChu vi hinh tron = %f", 2 * M_PI * r); printf("\nDien tich hinh tron = %f", M_PI * r * r); getch(); } void hinhvuong() { int a; printf("\n\nNhap vao canh hinh vuong : "); scanf("%d", &a); printf("\nChu vi hinh tron = %d", 4 * a); printf("\nDien tich hinh vuong = %d", a * a); getch(); } void hinhchunhat() { int a, b; printf("\n\nNhap vao cac canh hinh chu nhat : "); scanf("%d%d", &a, &b); printf("\nChu vi hinh chu nhat = %d", 2 * (a+b)); printf("\nDien tich hinh chu nhat = %d", b * a); getch(); } void main() { int chon; do { chon = menu(); switch(chon) { case 1 : hinhtamgiac(); break; case 2 : hinhtron(); break;
case 3 : hinhvuong(); break; case 4 : hinhchunhat(); break; } } while (chon != 0); } ------------------------------------ /* Bai tap 1_47 - Liet ke tat cac cac hoan vi cua n phan tu */ #include #define MAX 10 int mang[MAX], n; void swap (int *x, int *y) { int tmp; tmp = *x; *x = *y; *y = tmp; } void hoanvi(int k) { int j; if (k==1) { printf("\n"); for (j=0; j=0; j--) { swap(&mang[k-1], &mang[j]); hoanvi(k-1); swap(&mang[j], &mang[k-1]); } } void main() { int i; printf("\nCho biet so phan tu (N < 10) : ");
scanf("%d", &n); for (i=0; i
while (s[i] != ' ' && i
getch(); } ----------------------------------- /* Bai tap 1_86 - Tro choi Logic */ #include #include #include #include #include int day[7] = {-1,-1,-1,-1,-1,-1,-1}; int sonhap[4]; int somay[4]; int solanthu; int timthay; void khoitao() { char tieude[] = "L O G I C G A M E"; int j, i, dich; textmode(C40); clrscr(); textcolor(YELLOW); dich = (40 - strlen(tieude)) / 2; for (i=strlen(tieude)-1; i>=0; i--) { movetext(1,3,39,3,2,3); gotoxy(1,3); putch(tieude[i]); delay(40); } for (i=1; i
} gotoxy(14,5); cprintf("ÉÍÍÍÍÍÍÑÍÍÍÍÍÍ»"); for (i=0; i
gotoxy(wherex()+1,wherey()); break; } break; default : sound(880); delay(100); nosound(); } } while (!((c=='\r') && (sonhap[0] != 0) && (sonhap[1] != 0) && (sonhap[2] != 0) && (sonhap[3] != 0))); } void kiemtra() { int diem = 0, i; for (i=0; i