National Instruments 320682C

Chapter 2 Formatting and I/O Library

Fmt (buf, "%s<%i[w6p0]", a); /* result: "001234" */

a = 1234;

Fmt (buf, "%s<%i[w2]", a); /* result: "*4" */

Remarks

The results shown are the contents of buf after each call to Fmt. The last call demonstrates

what occurs when the width specified by the w modifier is too small.

Long Integer to String

char buf[20];

long a;

a = 123456;

Fmt (buf, "%s<%i[b4]", a); /* result: "123456" */

a = 123456;

Fmt (buf, "%s<%x[b4]", a); /* result: "1e240" */

a = 123456;

Fmt (buf, "%s<%o[b4]", a); /* result: "361100" */

a = -1;

Fmt (buf, "%s<%i[b4]", a); /* result: "-1" */

a = -1;

Fmt (buf, "%s<%i[b4u]", a); /* result: "4294967295" */

a = 123456;

Fmt (buf, "%s<%i[b4w8]", a); /* result: " 123456" */

a = 123456;

Fmt (buf, "%s<%i[b4w8p0]", a); /* result: "00123456" */

a = 123456;

Fmt (buf, "%s<%i[b4w4]", a); /* result: "*456" */

Remarks

The results shown are the contents of buf after each call to Fmt. The last call demonstrates

what occurs when the width specified by the w modifier is too small.

Real to String in Floating-Point Notation

char buf[30]

double x;

x = 12.3456789;

Fmt (buf, "%s<%f", x); /* result: "12.345679" */

x = 12.3456789;

Fmt (buf, "%s<%f[p2]", x); /* result: "12.35" */

x = 12.3456789;

Fmt (buf, "%s<%f[p10]", x); /* result: "12.3456789000" */

x = 12.345;

Fmt (buf, "%s<%f", x); /* result: "12.345" */

x = 12.345;