[akshayram]

i need help in converting a char array to a float datatype.
i have a char array a[10]={12.34} which i want to convert this array to float n=12.34 . i tried atof and i always get 0.00 as the answer.

[r.stiltskin]

Please post your actual code that is giving you this problem so we can see exactly what is wrong.

From what you posted, a likely cause is that your char array isn't null-terminated. You should either declare it this way:

char a[] = "12.34";

or if you declare it your way, assign a null char '\0' to the array element following the last digit.

[OLH064]

I'm fairly certain that if you define it as

char a[10]={12.34};

you'll just assign the first char as 12, which isn't even a number in the ASCII table, it's a control code that atof doesn't understand.

By assigning like

char a[10]="12.34";

you'll be assigning [0] the ASCII number 1, [1] the ASCII number 2, ect. atof will understand this format.

This post has been edited by OLH064: 03 February 2012 - 03:10 PM

[akshayram]

thank you guys for your help. i changed the array declaration as u suggested and it worked.