实验3

#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); 
}

#include <stdio.h>
long long fac(int n);
int main() {
int i, n;
printf("Enter n: ");
scanf("%d", &n);
for (i = 1; i <= n; ++i)
printf("%d! = %lld\n", i, fac(i));
return 0;
}
long long fac(int n) {
static long long p = 1;
printf("p = %lld\n", p);
p = p * n;
return p;
}

#include <stdio.h>
#include<stdlib.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;
}

#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 p;
if(n==0||m==n) return 1;
if(n==1) return m;
else return m*func(n,m-1)/(m-n);
}

#include <stdio.h>
#include<stdlib.h>
double mypow(int x, int y);
int main() {
int x, y;
double ans;
while(scanf("%d%d", &x, &y) != EOF) {
ans = mypow(x, y);
printf("%d的%d次方: %g\n\n", x, y, ans);
}
system("pause");
return 0;
}
double mypow(int x, int y){
double p=1;
while(y)
{
p=p*x;
--y;}
return p;
}