C fprintf() and fscanf()

Please find below explanation about C fprintf() and fscanf() with examples –

Writing File : fprintf() function

The fprintf() function is used to write set of characters into file. It sends formatted output to a stream.

Syntax:

int fprintf(FILE *stream, const char *format [, argument, …])

Example:

#include <stdio.h>

main(){

FILE *fp;

fp = fopen(“file.txt”, “w”);//opening file

fprintf(fp, “Hello file by fprintf…\n”);//writing data into file

fclose(fp);//closing file

}

Reading File : fscanf() function

The fscanf() function is used to read set of characters from file. It reads a word from the file and returns EOF at the end of file.

Syntax:

int fscanf(FILE *stream, const char *format [, argument, …])

Example:

#include <stdio.h>

main(){

FILE *fp;

char buff[255];//creating char array to store data of file

fp = fopen(“file.txt”, “r”);

while(fscanf(fp, “%s”, buff)!=EOF){

printf(“%s “, buff );

}

fclose(fp);

}

Output:

Hello file by fprintf...

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