wcstof function in C library
The wcstof() functions convert the initial portion of the wide-character string pointed to by str to a float point value. The str parameter points to a sequence of characters that can be interpreted as a numeric floating-point value. These functions stop reading the string at the first character that it cannot recognize as part of a number i.e. if the first character is any of any type except numbers the function terminates there only. This character can be the wchar_t null character at the end of the string.
The standard library functions beginning with ‘wcs’ are declared in wchar.h library in C.
Syntax :
float wcstof (const wchar_t* str, wchar_t** endptr);
Parameters :
str : C wide string beginning with the
representation of a floating-point number.
endptr : Reference to an already allocated object
of type wchar_t*, whose value is set by the function
to the next character in str after the numerical value.
This parameter can also be a null pointer.
Return value : Floating point value corresponding
to the contents of str on success. If the converted value
falls out of range of corresponding return type,
range error occurs and is returned.
C
#include <stdio.h>
#include <wchar.h>
int main()
{
wchar_t str[] = L "58.152 9.26" ;
wchar_t * pEnd;
float f1, f2;
f1 = wcstof(str, &pEnd);
f2 = wcstof(pEnd, NULL);
f2 = 2 * f2;
wprintf(L "%.2f\n%.2f\n" , f1, f2);
wprintf(L "Value of Pie is %.2f .\n" , f1 / f2);
return 0;
}
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Output:
58.15
18.52
Value of Pie is 3.14 .
Last Updated :
07 Jul, 2021
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