The C library function int fputs(const char *str, FILE *stream) writes a string to the specified stream up to but not including the null character.
Following is the declaration for fputs() function.
int fputs(const char *str, FILE *stream)
str − This is an array containing the null-terminated sequence of characters to be written.
stream − This is the pointer to a FILE object that identifies the stream where the string is to be written.
This function returns a non-negative value, or else on error it returns EOF.
The following example shows the usage of fputs() function.
#include <stdio.h> int main () { FILE *fp; fp = fopen("file.txt", "w+"); fputs("This is c programming.", fp); fputs("This is a system programming language.", fp); fclose(fp); return(0); }
Let us compile and run the above program, this will create a file file.txt with the following content −
This is c programming.This is a system programming language.
Now let's see the content of the above file using the following program −
#include <stdio.h> int main () { FILE *fp; int c; fp = fopen("file.txt","r"); while(1) { c = fgetc(fp); if( feof(fp) ) { break ; } printf("%c", c); } fclose(fp); return(0); }
Let us compile and run the above program to produce the following result.
This is c programming.This is a system programming language.