Need 0.013487 but I have 1.3487e-02

Code:

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// Matrizo: Dynamic Float Matrix
// i, j : integer;
// pFile: FILE*

...
fprintf (pFile, "%i %i %g\n",i,j,matrizo[i][j])
...

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My temp.txt show me 1.3487e-02 but I need 0.013487.

Someone can help me plz?

Tks ^^

fprintf (pFile, "%i %i %f\n",i,j,matrizo[i][j])

Quote:

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Originally Posted by Hacker2

fprintf (pFile, "%i %i %f\n",i,j,matrizo[i][j])

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Hacker2 tks for your answer ^^

But I really need the shorter version, with %f I'll have "0" after the number, thats why I'm using %g.

You can specify the number of decimal place to be displayed.

Code:

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fprintf (pFile, "%i %i %0.6f\n",i,j,matrizo[i][j]);

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Here is a complete spec of all the ways you can specify formatting
http://www.cplusplus.com/ref/cstdio/printf.html

Quote:

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Originally Posted by Kheun

You can specify the number of decimal place to be displayed.

Code:

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fprintf (pFile, "%i %i %0.6f\n",i,j,matrizo[i][j]);

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Kheun, I really need the numbers without "0", the way you told me will have sometimes unecessary "0" after:

Ex.:

0.500000
0.256000
...

But tks very much for your answer ;)

Quote:

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Originally Posted by Hacker2

Here is a complete spec of all the ways you can specify formatting
http://www.cplusplus.com/ref/cstdio/printf.html

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Tks very much Hacker2 ^^...

I saw the page and I dont think there is a way to show the way I need.. I'll have to go by the "hard" way..

Tks everyone :)

You could remove the trailing zeros manually:

Code:

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char temp[100];
sprintf(temp, "%f",matrizo[i][j]);

int k = strlen(temp);

if(k > 0) k--;  //avoid zero-length string problems

while(temp[k]=='0' && k > 0){
  temp[k]=0;
  k--;
}

fprintf (pFile, "%i %i %s\n",i,j,temp);

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