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Standard C Libraries
fscanf (Continued)
Prototype:
int fscanf(FILE * stream , const char * format , ...);
Arguments:
stream
format
...
pointer to the open stream from which to read data
format control string
optional arguments
Return Value:
Remarks:
Returns the number of items successfully converted and assigned. If
no items are assigned, a 0 is returned. EOF is returned if end-of-file is
encountered before the first conversion or if an error occurs.
The format argument has the same syntax and use that it has in
scanf .
Example:
#include <stdio.h> /*
/*
/*
/*
for fopen, fscanf,
fclose, fprintf,
fseek, printf, FILE,
NULL, SEEK_SET
*/
*/
*/
*/
int main(void)
{
FILE *myfile;
char s[30];
int x;
char a;
if ((myfile = fopen("afile", "w+")) == NULL)
printf("Cannot open afile\n");
else
{
fprintf(myfile, "%s %d times%c",
"Print this string", 100, '\n');
fseek(myfile, 0L, SEEK_SET);
fscanf(myfile,
printf("%s\n",
fscanf(myfile,
printf("%s\n",
fscanf(myfile,
printf("%s\n",
fscanf(myfile,
printf("%d\n",
fscanf(myfile,
printf("%s\n",
fscanf(myfile,
printf("%c\n",
"%s",
s);
"%s",
s);
"%s",
s);
"%d",
x);
"%s",
s);
"%c",
a);
s);
s);
s);
&x);
s);
a);
fclose(myfile);
}
}
Input:
Contents of afile :
Print this string 100 times
Output:
Print
this
string
100
times
? 2008 Microchip Technology Inc.
DS51456E-page 63
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