char *fcvt( double value, int ndigit, int *decpt, int *sign )
- prototype in stdlib.h - converts a floating pt number to a string of ndigit digits, returning pointer to that string - correct digit is rounded for Fortran-F format output of the number of digits equal to ndigit - decpt is position of decimal point (negative value means to left of returned digits) and sign is 0 if positive, else negative