Name

It is equivalent to:

strtod(nptr, (char **)NULL);

The decimal point character is defined in the program’s locale (category LC_NUMERIC).

#include <stdlib.h>
#include <stdio.h>
 
void main( void )
{
 /* Test of atof */
 double d = atof("  86778E-2");
 
 printf( "result of atof: %f\n", d );
}

Output

result of atof: 867.78

The atof function has been deprecated by strtod and its use is not preferred.

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