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# 实验3

5小时前 2次浏览
```#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! =%11dn",i,fac(i));
return 0;
}
long long fac(int n)
{static long long p =1;
p=p*n;
return p;
}```

```#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,%dn",p1,p2);
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>
void printSymbol(int n,char symbol);
int main(){
int n;
char symbol;
while(scanf("%d %c",&n, &symbol)!=EOF)
{
printSymbol(n, symbol);
printf("n");
}
return 0;
}
void printSymbol(int n,char symbol){
int a;
for(a=1;a<=n;a++){
printf("%c",symbol);
}
}
```

```#include<stdio.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");
}
return 0;
}
void printSymbol(int n,char symbol){
if(n==1) {printf("%c",symbol);}
if(n>1){
printf("%c",symbol);
printSymbol(n-1, symbol);
}
}```

```#include<stdio.h>
long long fun(int n);
int main(){
int n;
long long f;
while(scanf("%d",&n)!=EOF)
{
f=fun(n);
printf("n=%d,f=%lldn",n,f);
}
return 0;
}
long long fun(int n){
int sum,f,a;
sum=1;
for(a=1;a<=n;a++){
sum=sum*2;
}
f=sum-1;

}```

```#include<stdio.h>
#include<math.h>
int isPrime(int n);
int main(){
int i,a;
a=0;
for(i=101;i<=200;i++){
if(isPrime(i)==0){
printf("%5d",i);
a++;}
}
printf("n100~200之间一共有%d个非素数",a);
return 0;
}
int isPrime(int i){
int a,b,c;
b=sqrt(i);c=0;
for(a=2;a<=b;a++){
if(i%a==0)break;}
if(a>b&&i!=1)
return 1;
else return 0;

}```

```#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: %ldnn", t);
printf("Enter a number: ");
}
return 0;
}
long fun(long s){
int a,b,c;
b=0;c=0;
while(s!=0){
a=s%10;s=s/10;
if(a%2!=0){
b=b*10+a;
}}
while(b!=0){
a=b%10;b=b/10;
if(a%2!=0){
c=c*10+a;}
}
return c;
}```

```#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= %fnn", n, s);
printf("Enter n(1~10): ");
}
return 0;
}

double fun(int n){
int i;
double t=-1,s=0;
for(i=1;i<=n;i++){
t=-t*i;
s=s+1/t;
}

return s;
}```