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fputs() function in C language with Example

Here, we are going to learn about the fputs() function of library header stdio.h in C language with its syntax, example.
Submitted by Souvik Saha, on January 11, 2019

fputs() function in C

Prototype:

    int fputs(const char *string,FILE *filename);

Parameters:

    const char *string,FILE *filename

Return type: int

Use of function:

In the file handling, through the fputs() function we take the string from the user and store it to the input stream and increments the file pointer indicator for accepting next string input. The prototype of the function fputs() is: int fputs(const char *string,FILE *filename);

It returns the negative value on success and return EOF for failure. Here string is the array of character and filename is the name of the file stream.

fputs() example in C

#include <stdio.h>
#include <stdlib.h>

int main(){
	//Initialize the file pointer
	FILE *f;							
	//Take a array of characters 
	char ch[100];						

	//Create the file for write operation
	f=fopen("includehelp.txt","w");		
	printf("Enter five strings\n");
	for(int i=0;i<4;i++){
		//take the strings from the users
		scanf("%[^\n]",&ch);		
		//write back to the file
		fputs(ch,f);				
		//every time take a new line for the new entry string 
		//except for last entry.Otherwise print the last line twice
		fputs("\n",f);				
		//clear the stdin stream buffer
		fflush(stdin);
	}
	
	//take the strings from the users
	scanf("%[^\n]",&ch);
	fputs(ch,f);
	//close the file after write operation is over
	fclose(f);

	//open a file
	f=fopen("includehelp.txt","r");		
	printf("\n...............print the strings..............\n");
	while(!feof(f)){
		//takes the first 100 character in the character array 
		fgets(ch,100,f);
		//and print the strings
		printf("%s",ch);
	}
	//close the file
	fclose(f);		

	return 0;
}

Output

fputs example in c





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