C fseek() function

C fseek() function

C fseek() function

The fseek() function is used to set the file pointer to the specified offset. It is used to write data into file at desired location.


int fseek(FILE *stream, long int offset, int whence)

There are 3 constants used in the fseek() function for whence: SEEK_SET, SEEK_CUR and SEEK_END.


#include <stdio.h>

void main(){

FILE *fp;

fp = fopen(“myfile.txt”,“w+”);

fputs(“This is CloudsNClear”, fp);

fseek( fp, 7, SEEK_SET );

fputs(“Rohit Sharma”, fp);




This is Rohit Sharma

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