The function int putc(int character, FILE *stream); writes a character to the given stream and increment the internal position indicator by one.
Function prototype of putc
int putc(int character, FILE *stream);
- character : This is the character to be written on stream.
- stream : A pointer to a FILE object which identifies a stream.
Return value of putc
This function returns the character written in stream, on success. If an error occurs, EOF is returned and the error indicator is set.
C program using putc function
The following program shows the use of putc and getc function to write and read characters in a stream respectively. The following program writes a string(one character at time using putc) in a new file and again prints it's content on screen using getc.
#include <stdio.h>
#include <string.h>
int main (){
FILE *file;
char *string = "putc C Standard Library function";
int c, counter, length = strlen(string);
file = fopen("textFile.txt", "w+");
for(counter = 0; counter<length; counter++){
putc(string[counter], file);
}
/* Reset file pointer location to first character */
rewind(file);
/* Read characters from file */
while(!feof(file)){
c = getc(file);
printf("%c", c);
}
fclose(file);
return(0);
}
Output
putc C Standard Library function
The following program shows the use of putc function to write a characters on a standard output stream stdout.
#include <stdio.h>
int main (){
int c;
printf("Enter a character\n");
scanf("%c", &c);
printf("You entered : ");
putc(c, stdout);
getch();
return(0);
}
Output
Enter a character A You entered : A