The ifx_int8cvasc() function

The character string, strng_val, can contain the following symbols:

• A leading sign, either a plus (+) or minus (-).
• An exponent that is preceded by either e or E. You can precede the exponent by a sign, either a plus (+) or minus (-).

The file int8cvasc.ec in the demo directory contains the following sample program.

/*
   * ifx_in8cvasc.ec *

    The following program converts three strings to INT8
    types and displays the values stored in each field of
    the INT8 structures.
*/

#include <stdio.h>

EXEC SQL include "int8.h";

char string1[] = "-12,555,444,333,786,456";
char string2[] = "480";
char string3[] = "5.2";
main()
{
    mint x;
    ifx_int8_t num1, num2, num3;
    void nullterm(char *, mint);

    printf("IFX_INT8CVASC Sample ESQL Program running.\n\n");

    if (x = ifx_int8cvasc(string1, strlen(string1), &num1))
        {
        printf("Error %d in converting string1 to INT8\n", x);
        exit(1);
        }
    if (x = ifx_int8cvasc(string2, strlen(string2), &num2))
        {
        printf("Error %d in converting string2 to INT8\n", x);
        exit(1);
        }
    if (x = ifx_int8cvasc(string3, strlen(string3), &num3))
        {
        printf("Error %d in converting string3 to INT8\n", x);
        exit(1);
        }

    /*  Display the exponent, sign value and number of digits in num1. */

    ifx_int8toasc(&num1, string1, sizeof(string1));
    nullterm(string1, sizeof(string1));
    printf("The value of the first INT8 is = %s\n", string1);

    /*  Display the exponent, sign value and number of digits in num2. */

    ifx_int8toasc(&num2, string2, sizeof(string2));
    nullterm(string2, sizeof(string2));
    printf("The value of the 2nd INT8 is = %s\n", string2);

    /*  Display the exponent, sign value and number of digits in num3. */
    /*  Note that the decimal is truncated */

    ifx_int8toasc(&num3, string3, sizeof(string3));
    nullterm(string3, sizeof(string3));
    printf("The value of the 3rd INT8 is = %s\n", string3);

    printf("\nIFX_INT8CVASC Sample Program over.\n\n");
    exit(0);
}
void nullterm(char *str, mint size)
{
    char *end;

    end = str + size;
    while(*str && *str > ' ' && str <= end)
        ++str;
    *str = '\0';
}