fscanf
suggest changeLet’s say we have a text file and we want to read all words in that file, in order to do some requirements.
file.txt:
This is just a test file to be used by fscanf()
This is the main function:
#include <stdlib.h> #include <stdio.h> void printAllWords(FILE *); int main(void) { FILE *fp; if ((fp = fopen("file.txt", "r")) == NULL) { perror("Error opening file"); exit(EXIT_FAILURE); }
printAllWords(fp); fclose(fp); return EXIT_SUCCESS; } void printAllWords(FILE * fp) { char tmp[20]; int i = 1; while (fscanf(fp, "%19s", tmp) != EOF) { printf("Word %d: %s\n", i, tmp); i++; } }
The output will be:
Word 1: This Word 2: is Word 3: just Word 4: a Word 5: test Word 6: file Word 7: to Word 8: be Word 9: used Word 10: by Word 11: fscanf()
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