c语言编程求函数的值 c语言计算函数的值例题

C语言入门题,求函数值#include stdio.h
#include math.h
#define PI 3.1415926
int main()
{
double x,y;
scanf("%lf",x);
y=abs(pow(x,2)-7*exp(x))+sqrt(3*pow(x,2)+PI*sin(67*PI/180)/2);
printf("%lf",y);
return 0;
}
c语言求函数值int fun(int x )
{
if(x0x!=3)
return x*x+x+6;
if((x=0x10)(x!=2)(x!=3))
returnx*x - 5*x+6;
return x*x-x-1;
}
希望能帮到你,望采纳!
用C语言求分段函数值#include stdio.h
int main()
{double x,y;
scanf("%lf",x);
if(x0)y=x*x-1;
else if(x1)y=x*x;
else y=x*x+1;
printf("%g",y);
return 0;
}
C语言编函数求值~#include stdio.h
#include stdlib.h
//高精度计算s=1/n+1/(n+1)+1/(n+2)+……+1/m表达式的值
//求得的s是个分数,分子放在result[0]中,分母放在result[1]中
void func(double *result)
{
int m, n, i;
double *numerator; //分子
printf("Please input n and m (Separate by space and 0nm): \n");
while(scanf("%d%d", n, m))
{
if((0n)(nm))
break;
printf("Value Invalid, please try again!\n");
【c语言编程求函数的值 c语言计算函数的值例题】printf("Please input n and m (Separate by space and 0nm): \n");
}
numerator = (double *)calloc(m, sizeof(double));
if(!numerator)
{
printf("malloc failed!\n");
exit(0);
}
result[1] = 1;
//下面两个for循环是进行通分
for(i=n; i=m; i++)
result[1] *= i;
for(i=n; i=m; i++)
numerator[i-n] = result[1]/i;
result[0] = 0;
//对分母进行相加
for(i=n; i=m; i++)
result[0] += numerator[i-n];
for(i=n; im; i++)
printf("1/%d + ", i);
printf("1/%d = ", m);
free(numerator);
}
int main()
{
double result[2];
func(result);
printf("%g/%g\n", result[0], result[1]);
return 0;
}
//如果你还想对结果化为最简分数的话,可以告诉我,我会改程序
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