task3
作者：互联网
1.
#include<stdio.h>
#include<stdlib.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!=%11d\n",i,fac(i));
system("pause");
return 0;
}
long long fac(int n)
{
static long long p=1;
p=p*n;
return p;
}
#include<stdio.h>
#include<stdlib.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!=%11d\n",i,fac(i));
system("pause");
return 0;
}
long long fac(int n)
{
static long long p=1;
printf("p=%11d\n",p);
p=p*n;
return p;
}
#include<stdio.h>
#include<stdlib.h>
int fun(int,int);
int main()
{
int k=4,m=1,p1,p2;
p1=fun(k,m);
p2=fun(k,m);
printf("%d,%d\n",p1,p2);
system("pause");
return 0;
}
int fun(int a,int b)
{
static int m=0,i=2;
i+=m+1;
m=i+a+b;
return (m);
}
2.
#include<stdio.h>
#include<stdlib.h>
void printsymbol(int n, char symbol);
int main()
{
int n;
char symbol;
while(scanf("%d %c",&n,&symbol)!=EOF)
{
printsymbol(n,symbol);
printf("\n");
}
system("pause");
return 0;
}
void printsymbol(int n,char symbol)
{
int i;
for(i=0;i<n;i++)
printf("%c",symbol);
return ;
}
int n;
char symbol;
while(scanf("%d %c",&n,&symbol)!=EOF)
{
printsymbol(n,symbol);
printf("\n");
}
system("pause");
return 0;
}
void printsymbol(int n,char symbol)
{
if(n==1)
printf("%c",symbol);
else
{
printf("%c",symbol);
printsymbol(n-1,symbol);
}
return;
}
3.
#include<stdio.h>
long long fun(int n);
int main()
{
int n;
long long f;
while (scanf("%d", &n) != EOF)
{
f = fun(n)-1;
printf("n=%d,f=%lld\n", n, f);
}
return 0;
}
long long fun(int n)
{
int sum;
sum = 2;
if (n == 1)
sum == 2;
else
sum = 2* fun(n - 1);
return sum;
}
4.
#include<stdio.h>
int isPrime(int n);
int main()
{
int n, res, i,num;
n = 101;
num = 0;
for (i = 201; n < i; n++)
{
res = isPrime(n);
if (res == 0) {
printf(" %d ", n);
num++;
}
}
printf("\n");
printf("101~200之间有%d个素数", num);
return 0;
}
int isPrime(int n)
{
int i,ret;
ret = 1;
for (i = 2; i < n; i++)
{
if (n % i ==0)
{
ret = 0;
break;
}
}
return ret;
}
5.
#include<stdio.h>
long fun(long s);
int main()
{
long s, t;
printf("Enter a number:");
while (scanf("%ld", &s) != EOF)
{
t = fun(s);
printf("new number is:%ld\n\n", t);
printf("Enter a number:");
}
return 0;
}
long fun(long s)
{
int res, n, i,m;
res = 0;
n = 10;
m = 1;
for (i = 0; i < 10; i++)
{
if ((s % n) % 2 != 0)
{
res = (s % n) * m + res;
m = m * 10;
s = (s - s % 10) / 10;
}
else
s = (s - s % 10) / 10;
}
return res;
}
6.
#include<stdio.h>
double fun(int n);
int main()
{
int n;
double s;
printf("Enter n(1~10):");
while (scanf("%d", &n) != EOF)
{
s = fun(n);
printf("n=%d,s=%f\n\n", n, s);
printf("Enter n(1~10):");
}
}
double fun(int n)
{
int i,s,mid;
double m,sum;
mid = 1;
m = 1;
sum = 0;
s= 1;
for (i = 1; i<=n; i++)
{
mid = mid * i;
sum = s*(m / mid)+sum;
s = -s;
}
return sum;
}
.
标签：task3,int,symbol,long,printf,fun,include 来源： https://www.cnblogs.com/yu-qiu/p/15597420.html