1 #include <stdio.h>
2 #include <stdlib.h>
3 #include <time.h>
4 #include <windows.h>
5 #define N 80
6 void print_text(int line, int col, char text[]);
7 void print_spaces(int n);
8 void print_blank_lines(int n);
9 int main() {
10 int line, col, i;
11 char text[N] = "hi, November~";
12 srand(time(0));
13 for(i = 1; i <= 10; ++i) {
14 line = rand() % 25;
15 col = rand() % 80;
16 print_text(line, col, text);
17 Sleep(1000);
18 }
19 return 0;
20 }
21
22 void print_spaces(int n) {
23
24 int i;
25 for(i = 1; i <= n; ++i)
26 printf(" ");
27 }
28
29 void print_blank_lines(int n) {
30 int i;
31 for(i = 1; i <= n; ++i)
32 printf("\n");
33 }
34
35 void print_text(int line, int col, char text[]) {
36 print_blank_lines(line-1);
37 print_spaces(col-1);
38 printf("%s", text);
39 }
1 #include <stdio.h>
2 long long fac(int n);
3 int main() {
4 int i, n;
5 printf("Enter n: ");
6 scanf("%d", &n);
7 for (i = 1; i <= n; ++i)
8 printf("%d! = %lld\n", i, fac(i));
9 return 0;
10 }
11 long long fac(int n) {
12 static long long p = 1;
13 p = p * n;
14 return p;
15 }
1 #include <stdio.h>
2 int func(int, int);
3 int main() {
4 int k = 4, m = 1, p1, p2;
5 p1 = func(k, m);
6 p2 = func(k, m);
7 printf("%d, %d\n", p1, p2);
8 return 0;
9 }
10
11 int func(int a, int b) {
12 static int m = 0, i = 2;
13 i += m + 1;
14 m = i + a + b;
15 return m;}
1 #include<stdio.h>
2 long long func(int n);
3 int main()
4 {
5 int n;
6 long long f;
7 while (scanf_s("%d", &n) != EOF)
8 {
9 f = func(n);
10 printf("n=%d,f=%lld\n", n, f);
11 }
12 return 0;
13 }
14 long long func(int n)
15 {
16 long long Y;
17 if (n == 1)
18 Y= 1;
19 else
20 Y= 2 * (func(n - 1) + 1) - 1;
21 return Y;
22 }
1 #include<stdio.h>
2 int func(int n, int m);
3
4 int main()
5 {
6 int n, m;
7 while (scanf_s("%d%d", &n, &m) != EOF)
8 printf("n=%d,m=%d,ans=%d\n", n, m, func(n, m));
9 return 0;
10 }
11 int func(int n, int m)
12 {
13 int Y;
14
15 if (n == m || m == 0)
16 return 1;
17
18 if (n < m)
19 return 0;
20
21 else
22 Y = func(n - 1, m) + func(n - 1, m - 1);
23 return Y;
24 }
1 #include <stdio.h>
2 int mul(int n, int m);
3 int main()
4 {
5 int n, m;
6 while (scanf_s("%d%d", &n, &m) != EOF)
7 printf("%d * %d = %d\n", n, m, mul(n, m));
8 return 0;
9 }
10 int mul(int n, int m)
11 {
12
13 if (m == 0)
14 return 0;
15
16 else
17 return n + mul(n, m - 1);
18
19 }
1 #include<stdio.h>
2 #include<stdlib.h>
3
4 void hanoi(unsigned int n, char from, char temp, char to);
5 void moveplate(unsigned int n, char from, char to);
6 int i;
7
8 int main()
9 {
10 unsigned int n;
11
12 while (scanf_s("%u", &n) != EOF)
13 {
14 hanoi(n, 'A', 'B', 'C');
15 printf("\n");
16 printf(" 一共移动了%u次", i);
17 printf("\n");
18 i = 0;
19 }
20 system("pause");
21
22 return 0;
23 }
24
25 void hanoi(unsigned int n, char from, char temp, char to)
26 {
27 if (n == 1)
28 moveplate(n, from, to);
29 else
30 {
31 hanoi(n - 1, from, to, temp);
32 moveplate(n, from, to);
33 hanoi(n - 1, temp, from, to);
34 }
35 }
36 void moveplate(unsigned int n, char from, char to)
37 {
38 i++;
39 printf("%u:%c-->%c\n", n, from, to);
40 }
#include<stdio.h>
#include<stdlib.h>
int is_prime(int n);
int main()
{
int i, a, b;
for (i = 1; i <= 20; ++i)
{
if (i % 2 == 0) {
for (a = 2; a < i; a++) {
b = i - a;
if (is_prime(b) && is_prime(a) && b != 0) {
printf("%d=%d+%d\n", i, a, b);
break;
}
}
}
else continue;
}
}
int is_prime(int n)
{
int i;
int y = 1;
for (i = 2; i < n; ++i)
{
if (n % i== 0)
{
y = 0;
break;
}
}
return y
;
}
1 #include <stdio.h>
2 #include<stdlib.h>
3 #include<math.h>
4 long fun(long s);
5
6 int main()
7 {
8 long s, t;
9 printf("Enter a number: ");
10 while (scanf_s("%ld", &s) != EOF)
11 {
12 t = fun(s);
13 printf("new number is: %ld\n\n", t);
14 printf("Enter a number: ");
15 }
16 return 0;
17 }
18
19 long fun(long s)
20 {
21 int ans[100], i, t = 0, j, a;
22 long sum = 0;
23 for (i = 0; i <= 100; i++)
24 {
25 a = s % 10;
26 s = s / 10;
27 if (a % 2 == 1)
28 {
29 ans[t] = a;
30 t++;
31 }
32 else continue;
33 }
34 for (j = t - 1; j >= 0; j--)
35 {
36 sum = sum * 10 + ans[j];
37 }
38 return sum;
39
40 }
