C语言编程题：输入X和Y的值，编写程序计算f(x,n)=x^2+x^3-x^4+...(-1)^n-1x^n,其中用函数power(x,n)求x^n， 用C语言编写“输入x，n的值，计算式子是S=X/2!+X^2...
int power(int x,int n)
{
int p=1,i;
for(i=1;i<=n;i++)
p*=x;
return p;
}
int fun(int x,int n)
{
int s=0,i;
for (i=2;i<=n;i++)
s+=power(-1,i-1)*power(x,i);
return s;
}
int main(int argc, char *argv[])
{
int x,n;
printf("请输入x和n的值：");
scanf("%d%d",&x,&n);
printf("-x^2+x^3-x^4+...(-1)^n-1x^n=%d\n",fun(x,n));
return 0;
}
给你来个简单的
#include"stdio.h"
#include"math.h"
void main()
{
int f=0,i,x,n;
printf("please input x= ,n= \n");
scanf("%d%d",&x,&n);
for(i=1;i<=n;i++) f+=pow(-1,i-1)*pow(x,i);
printf("f(%d,%d)=%d",x,n,f);
}
C语言编程题：输入x和n的值，编写程序计算f(x,n)=x-x^2+x^3-x^4+...x^n(-1)^n-1,其中用函数power(x,n)求x^n
# include
double power(double x, int n)
{
int i = 1, index = 0 ;
double result = 0 ;
for(index = 1 ; index <= n ; index++)
{
result += i * pow(x, index) ;
i = -i ;
}
return (result) ;
}
#include
#include
long factorial(long m){
assert(m>=0);
if(m<=1)
return 1;
m=m*factorial(m-1);
return m;
}
long exponent(long x, long e){
long i = 0;
long value = 1;
for(i; i < e; i++){
value *= x;
}
return value;
}
float get(long x, long n){
long i=0;
float value = 0.0;
for(i; i<n; i++){
value += (float)exponent(x,i+1)/(float)factorial(i+2);
}
return value;
//return factorial(m)*factorial(n)/factorial(m-n);
}
void main(){
long m,n;
printf("Please input the x:");
scanf("%ld",&m);
printf("Please input the n:");
scanf("%ld",&n);
printf("The result is=%f
",get(m,n));
}
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相关评论
19264785994： int x, y; scanf(＂%d%d＂,&x,&y); int temp; temp = x; x= y; y = temp; 请采纳,谢谢
19264785994： #include <stdio.h> int power(int x,int n) { int p=1,i; for(i=1;i<=n;i++) p*=x; return p; } int fun(int x,int n) { int s=0,i; for (i=2;i<=n;i++) s+=power(-1,i-1)*power(x,i); return s; } int main(int argc, char *argv[]) { int x,n; printf(＂请输入x和n的值:＂); scanf(...
