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21 sie 2012 · To find out the end of the file with symbols you can use EOF. For example: char symbol; FILE *in = fopen("./task.in", "r"); for ( ; fscanf(in, "%c", &symbol) != EOF; ) { printf("%c", symbol); }
while(fscanf(in,"%s",name) != EOF){ fscanf(in,"%s",surname); while( !feof(in) && fscanf(in,"%d",&grade)>0 ){ n_grades++; } } EOF stands for End Of File, so the first loop will continue until the end of the file is found, i.e. until the file pointer reaches the end of the file.
11 paź 2024 · int fscanf(FILE *ptr, const char *format, ...) fscanf reads from a file pointed by the FILE pointer (ptr), instead of reading from the input stream. Return Value: It returns zero or EOF, if unsuccessful.
The scanf () function reads input from the standard input stream stdin and fscanf () reads input from the stream pointer stream. The vfscanf () function is analogous to vfprintf (3) and reads input from the stream pointer stream using a variable argument list of pointers (see stdarg (3).
Reaching the end of the string in sscanf() shall be equivalent to encountering end-of-file for fscanf(). If conversion terminates on a conflicting input, the offending input is left unread in the input.
2 lut 2024 · Use the fscanf Function to Read File Line by Line in C. Use the fscanf Function to Read File Word by Word in C. This article will explain several methods of how to read a file line by line using fscanf in C.
The fscanf() function reads formatted data from a file and writes it into memory locations specified by the arguments, then moves the position indicator to the file position where it stopped reading. The fscanf() function is defined in the <stdio.h> header file.
