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This page displays the COHERENT manpage for sscanf() [Format a string].
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sscanf() -- STDIO Function (libc) Format a string #include <stdio.h> int sscanf(string, format [, arg ] ...) char *string; char *format; sscanf() reads the argument string, and uses format to specify a format for each arg, each of which must be a pointer. For more information on sscanf()'s conversion codes, see scanf(). Example This example uses sprintf() to create a string, and then reads it with sscanf(). It also illustrates a common problem with this routine. #include <stdio.h> main() { char string[80]; char s1[10], s2[10]; sprintf(string, "123456789012345678901234567890"); sscanf(string, "%9c", s1); sscanf(string, "%10c", s2); printf("\n%s is the string\n", string); printf("%s: first 9 characters in string\n", s1); printf("%s: first 19 characters in string\n", s2); } See Also fscanf(), libc, scanf() ANSI Standard, §7.9.6.6 POSIX Standard, §8.1 Diagnostics sscanf() returns the number of arguments filled. It returns zero if no arguments can be filled or if an error occurs. Notes Because C does not perform type checking, an argument must match its format specification. sscanf() is best used only to process data that you are certain are in the correct data format, such as data that were written with sprintf(). sscanf() is difficult to use correctly, and incorrect usage can create serious bugs in programs. It is recommended that you use strtok() instead.