hello!
I got unexpected output (and have no idea how to get that output as in C
program)
$ nim -v
Nim Compiler Version 2.0.8 [Linux: amd64]
Compiled at 2024-07-03
Copyright (c) 2006-2023 by Andreas Rumpf
$ gcc --version
gcc (Ubuntu 11.4.0-1ubuntu1~22.04) 11.4.0
Run
#include <stdio.h>
int main(void) {
// fahr is 0, 20, ... 300
float fahr, celsius;
int low, up, step;
low = 0; // from 0
up = 300; // to 300
step = 20; // with step 20
printf("Fahrenheit Celsius\n");
for(fahr = low; fahr <= up; fahr = fahr + step){
celsius = (5.0 / 9.0) * (fahr - 32.0);
printf("%3.0f %6.1f\n", fahr, celsius);
}
printf("done!\n");
return 0;
}
Run
output
./program_c
Fahrenheit Celsius
0 -17.8
20 -6.7
40 4.4
60 15.6
80 26.7
100 37.8
120 48.9
140 60.0
160 71.1
180 82.2
200 93.3
220 104.4
240 115.6
260 126.7
280 137.8
300 148.9
done!
Run
import std/math
var
fahr, celsius: float
low, up, step: float
low = 0.0 # from 0
up = 300.0 # to 300
step = 20.0 # with step 20
echo "Fahrenheit Celsius"
while fahr <= up:
celsius = round( (5.0 / 9.0) * (fahr - 32.0), 1)
echo fahr, " ", celsius
fahr = fahr + step
echo "done!"
Run
output
./program_nim
Fahrenheit Celsius
0.0 -17.8
20.0 -6.7
40.0 4.4
60.0 15.6
80.0 26.7
100.0 37.8
120.0 48.9
140.0 60.0
160.0 71.09999999999999
180.0 82.2
200.0 93.3
220.0 104.4
240.0 115.6
260.0 126.7
280.0 137.8
300.0 148.9
done!
Run
71.1 =/= 71.09999999999999 so round(x, 1) is buggy? how to fix it? thank you
