hi:
Here are some dataset:
=================
dog;This is a dog;11
cat;no cat here;4
!EMPTY!;blabla;-1
blablabla
Here is the function to read data:
=======================
The problem is that how can I read "This is a dog" into Text.string.Code:while (fscanf(inputFp, "%s;%s;%d", Pattern.string, Text.string, &expectedIndex) != EOF ) { ........... }
Should I use fscanf, or I can use something simpler?
Appreciate for help.
@figo2476
How about the strtok() function?
http://www.cppreference.com/stdstring/strtok.html
I am not sure how it works with fscanf, because the length of the string which is to be read, is not specified.
One way is use fgetc(file pointer) and read each character, and when you find a ';', look for first 4 characters. if the first 4 characters string is "This", then read the rest of the characters until you find a ';' again.
Last edited by spveer; 08-18-2005 at 02:38 AM.
http://www.daniweb.com/code/snippet281.html
"%[^;];%[^;];%d"
7. It is easier to write an incorrect program than understand a correct one.
40. There are two ways to write error-free programs; only the third one works.*
I tried this and I found something intresting:
Here is my code:
---------------------
Code:int main(int argc, char *argv[]) { FILE *inputFp; FILE *outputFp; int shift = 0; STRING Pattern; STRING Text; char buffer[BUFFER_LEN]; char lenArray[100]; char field[200]; char *ptr = NULL; char *patternTmp, *textTmp, *expect; int len; int n; inputFp = fopen(INPUT, "r"); if (inputFp == NULL) { printf("Can't open input file: TestCases.in"); exit(0); } outputFp = fopen(OUTPUT, "w"); if (outputFp == NULL) { printf("Can't open output file: TestResults.out"); exit(0); } /* Read the input file */ while (fgets(buffer, BUFFER_LEN, inputFp)) { ptr = strtok(buffer, "\n"); while (sscanf(ptr, "%199[^;]%*c%n", field, &n) == 1) { ptr += n; printf("field = %s\n", field); } } fclose(inputFp); fclose(outputFp); My input file ---------------- dog;This is a dog;11 cat;no cat here;4 EMPTY;blabla;-1 EMPTY;EMPTY;1 dog;This dog;11 My output ------------- field = dog field = This is a dog field = 11 field = cat field = no cat here field = 4 field = EMPTY field = blabla field = -1 field = /* I am not sure this */ field = EMPTY field = EMPTY field = 1 field = dog field = This dog field = 11 }
Thanks for finding that. Perhaps this would work better.
Code:#include <stdio.h> #include <string.h> int main(void) { static const char filename[] = "file.txt"; FILE *file = fopen(filename, "r"); if ( file != NULL ) { char line [ BUFSIZ ]; while ( fgets(line, sizeof line, file) != NULL ) { int n; char field [ BUFSIZ / 2 ], *ptr = strtok(line, "\n"); printf("line = \"%s\"\n", line); while ( sscanf(ptr, "%199[^;]%n", field, &n) == 1 ) { printf("field = %s\n", field); ptr += n; if ( *ptr != ';' ) { break; } ++ptr; } putchar('\n'); } fclose(file); } else { perror(filename); } return 0; } /* file.txt dog;This is a dog;11 cat;no cat here;4 EMPTY;blabla;-1 EMPTY;EMPTY;1 dog;This dog;11 */ /* my output line = "dog;This is a dog;11" field = dog field = This is a dog field = 11 line = "cat;no cat here;4" field = cat field = no cat here field = 4 line = "EMPTY;blabla;-1" field = EMPTY field = blabla field = -1 line = "EMPTY;EMPTY;1" field = EMPTY field = EMPTY field = 1 line = "dog;This dog;11" field = dog field = This dog field = 11 */
7. It is easier to write an incorrect program than understand a correct one.
40. There are two ways to write error-free programs; only the third one works.*
