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Write an implementation of “float stringToFloat(char *str).”
The code should be simple, and not require more than the
basic operators (if, for, math operators, etc.).
• Assumptions
• Don’t worry about overflow or underflow
• Stop at the 1st invalid character and return the number
you have converted till then, if the 1st character is
invalid return 0
• Don’t worry about exponential (e.g. 1e10), instead you
should treat ‘e’ as an invalid character
• Write it like real code, e.g. do error checking
• Go though the string only once
• Examples
• “1.23” should return 1.23
• “1a” should return 1
• “a”should return 0
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Answer Posted / fernando
If I have character buffer with many floats and want to
separate it as I do?
Example:
for (uint8_t i = 0; i < n; i++)
{
buf [i]; 25.45, 26.54,...
}
buf[0]=
buf[1]=
.
.
.
buf[n]=
Thanks.
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