task 1
点击查看代码
#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include <windows.h>
#define N 80
void print_text(int line, int col, char text[]);
void print_spaces(int n);
void print_blank_lines(int n);
int main() {
int line, col, i;
char text[N] = "hi, April~";
srand(time(0));
for(i = 1; i <= 10; ++i) {
line = rand() % 25;
col = rand() % 80;
print_text(line, col, text);
Sleep(1000);
}
return 0;
}
void print_spaces(int n) {
int i;
for(i = 1; i <= n; ++i)
printf(" ");
}
void print_blank_lines(int n) {
int i;
for(i = 1; i <= n; ++i)
printf("\n");
}
void print_text(int line, int col, char text[]) {
print_blank_lines(line-1);
print_spaces(col-1);
printf("%s", text);
}
task 2
点击查看代码
#include <stdio.h>
#include<stdlib.h>
long long fac(int n); // 函数声明
int main() {
int i, n;
printf("Enter n: ");
scanf("%d", &n);
for (i = 1; i <= n; ++i)
printf("%d! = %lld\n", i, fac(i));
system("pause:");
return 0;
}
// 函数定义
long long fac(int n) {
static long long p = 1;
p = p * n;
return p;
}
点击查看代码
#include <stdio.h>
#include<stdlib.h>
long long fac(int n); // 函数声明
int main() {
int i, n;
printf("Enter n: ");
scanf("%d", &n);
for (i = 1; i <= n; ++i)
printf("%d! = %lld\n", i, fac(i));
system("pause:");
return 0;
}
// 函数定义
long long fac(int n) {
static long long p = 1;
printf("p = %lld\n", p);
p = p * n;
return p;
}
点击查看代码
#include<stdlib.h>
#include <stdio.h>
int func(int, int);
int main() {
int k = 4, m = 1, p1, p2;
p1 = func(k, m);
p2 = func(k, m);
printf("%d, %d\n", p1, p2);
system("pause:");
return 0;
}
int func(int a, int b) {
static int m = 0, i = 2;
i += m + 1;
m = i + a + b;
return m;
}
task 3
点击查看代码
#include <stdio.h>
#include<stdlib.h>
long long func(int n); // 函数声明
int main() {
int n;
long long f;
while (scanf("%d", &n) != EOF) {
f = func(n); // 函数调用
printf("n = %d, f = %lld\n", n, f);
}
system("pause:");
return 0;
}
long long func(int n)
{
if(n>=1)
return 2*func(n-1)+1;
else if(n==0)
return 0;
}
task 4
点击查看代码
#include <stdio.h>
#include<stdlib.h>
int func(int n, int m);
int main() {
int n, m;
while(scanf("%d%d", &n, &m) != EOF)
printf("n = %d, m = %d, ans = %d\n", n, m, func(n, m));
system("pause:");
return 0;
}
int func(int n, int m){
int i, a, b ,c;
if (n < m)
return 0;
else if (n== m==0)
return 1;
else
{for (i = n; i >= n - m + 1; i--)
a *= i;
for (b = 1; b <= m; b++)
c *= b;
return a / c;}
}
点击查看代码
#include <stdio.h>
#include<stdlib.h>
int func(int n, int m);
int main() {
int n, m;
while(scanf("%d%d", &n, &m) != EOF)
printf("n = %d, m = %d, ans = %d\n", n, m, func(n, m));
system("pause:");
return 0;
}
int func(int n, int m){
if (m == n == 0)
return 1;
else if (m > n)
return 0;
else
return func(n - 1, m) + func(n - 1, m - 1);
}
task 5
点击查看代码
#include <stdio.h>
#include<stdlib.h>
void hanio(int n,char from,char temp,char to);
void moveplate(int n,char from,char to);
int sum(int n);
int main()
{
int k;
char A,B,C;
int n;
while(scanf("%d",&n)!=EOF)
{
hanio(n,'A','B','C');
k=sum(n);
printf("一共移动了%d次\n",k);
system("pause");
}
return 0;
}
void moveplate(int n,char from,char to)
{
printf("%d : %c --> %c\n",n,from,to);
}
void hanio(int n,char from,char temp,char to)
{
if(n==1){
moveplate(n,from,to);}
if(n>1)
{
hanio(n-1,from,to,temp);
moveplate(n,from,to);
hanio(n-1,temp,from,to);
}
}
int sum(int n)
{
if(n==1){
return 1;}
if(n>1){
return 2*sum(n-1)+1;}
}
task 6
点击查看代码
#include <stdio.h>
#include <math.h>
#include<stdlib.h>
long func(long s);
int main() {
long s, t;
printf("Enter a number: ");
while (scanf("%ld", &s) != EOF) {
t = func(s);
printf("new number is: %ld\n\n", t);
printf("Enter a number: ");
}
system("pause:");
return 0;
}
long func(long s){
long a, b, c;
a = 0;
c = 1;
while (s != 0) {
b = s % 10;
if (b % 2) {
a += c * b;
c *= 10;
}
s /= 10;
}
return a;
}