# 实验3 函数

#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!=%11d\n",i,fac(i));

return 0;
}
long long fac(int n)
{
static long long p=1;

p=p*n;
return p;
}

#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!=%11d\n",i,fac(i));

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>
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);

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 i;
for(i=1;i<=n;i++)
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);
else{
printf("%c",symbol);
return 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=%lld\n",n,f);
}
return 0;
}
long long fun(int n)
{
unsigned int result;
if(n==1)
result=1;
else
result=2*fun(n-1)+1;
return result;
}

#include<stdio.h>
#include<math.h>
int isPrime(int n);
int main()
{
int i,k=0;
for(i=101;i<=200;i++)
{
if(isPrime(i))
{
printf("%4d",i);
k++;
}
}
printf("\n");
printf("101~200之间一共有 %d个非素数",k);
return 0;
}
int isPrime(int n)
{
int j;
for(j=2;j<=sqrt(n);j++)
if(n%j==0)
return 1;
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:%ld\n\n",t);
printf("Enter a number:");
}
return 0;
}
long fun(long s)
{
int a,b=0,c=1;
while(s>0){
a=s%10;
if(a%2!=0)
{
a*=c;
b+=a;
c*=10;
}
s/=10;
}
return b;
}

#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):");
}
return 0;
}
double fun(int n)
{
int j,D=1,sign=1;
double sum=0,team;
for(j=1;j<=n;j++)
{
D=D*j;
team=1.0/D;
sum+=sign*team;
sign=-sign;
}
return sum;
}

posted @ 2021-11-24 16:50  谢能骏  阅读(15)  评论(1编辑  收藏  举报