Kishor wrote:
Hi Friends
Please help me to write a C program to find the 5th (fifth) root of a given number.
Ex:(1) Input : 32
Output : 5th root of 32 is 2
Ex:(1) Input : 243
Output : 5th root of 243 is 3
#include <stdio.h>
#include <stdlib.h>
#include <math.h>
#include <time.h>
#include <float.h>
inline double root(double x)
{
return pow(x, 0.2);
}
inline double original(double x)
{
return pow(x, 5.);
}
int main(void)
{
size_t pass;
const size_t maxpass = 10;
double x;
const double upperlimit = 1000.;
srand((unsigned) time(0));
for (pass = 0; pass < maxpass; pass++) {
x = upperlimit * rand() / (1. + RAND_MAX);
printf("number: %.*g\n", DBL_DIG, x);
printf("5th root: %.*g\n", DBL_DIG, x = root(x));
printf("root to 5th power: %.*g\n\n", DBL_DIG, original(x));
}
return 0;
}
number: 349.126742687076
5th root: 3.22549685893672
root to 5th power: 349.126742687076
number: 933.513863012195
5th root: 3.92666773917324
root to 5th power: 933.513863012195
number: 337.094322778285
5th root: 3.20295094809955
root to 5th power: 337.094322778285
number: 921.04862164706
5th root: 3.91612469036527
root to 5th power: 921.04862164706
number: 193.956033326685
5th root: 2.86774584184895
root to 5th power: 193.956033326685
number: 536.526418756694
5th root: 3.51494247913713
root to 5th power: 536.526418756694
number: 769.721171818674
5th root: 3.77804117237769
root to 5th power: 769.721171818674
number: 245.490406174213
5th root: 3.00612409691297
root to 5th power: 245.490406174213
number: 818.889678921551
5th root: 3.82512013459173
root to 5th power: 818.889678921551
number: 422.267477028072
5th root: 3.35056098160768
root to 5th power: 422.267477028072
--
Martin Ambuhl
