fseek() in C - Code Snippet

Created: 2022-07-10
Tags: #permanent

fseek(FILE *stream, long int offset, int whence)
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Parameters of fseek() Explained

1. parameter stream is the FILE pointer
2. position of record to be found
3. whence (location where 2nd parameter offset starts)
   -> SEEK_SET = Starts offset BEGINNING of file
   -> SEEK_END = Starts offset END of file
   -> SEEK_CUR = Stats offset CURRENT LOCATION OF CURSOR in the file

#include <stdio.h>

int main() {
    // Open the file
    FILE* fp = fopen("C:\\program.txt", "r");

    // Move pointer to start of file
    // And set offset as 5, basically ignore first 5 characters
    fseek(fp, 5, SEEK_SET);


    // Read from the file using fread()
    char buffer[512];
    fread(buffer, sizeof(buffer), sizeof(char), fp);
    printf("File contains: \n%s", buffer);


    fclose(fp);
}
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