Use C gets function to read characters from standard input
Syntax
C gets function has the following syntax.
char *gets(char *str);Header
C gets function
is from header file stdio.h.
Description
C gets function reads characters from stdin.
The newline character is translated into a null to terminate the string.
It returns a null pointer on failure.
You cannot limit the number of characters that gets() will read.
Example
Read character from standard input by using C gets function.
#include <stdio.h>
#include <stdlib.h>
/*from w w w.ja va 2s. c o m*/
int main(void)
{
char fname[128];
printf("Enter filename: ");
gets(fname);
printf("%s \n", fname);
return 0;
}
The code above generates the following result.
Using gets and putchar
#include <stdio.h>
// w ww.j a v a 2s . c o m
void reverse( const char * const sPtr );
int main()
{
char sentence[ 80 ];
printf( "Enter a line of text:\n" );
gets( sentence );
printf( "\nThe line printed backwards is:\n" );
reverse( sentence );
return 0;
}
void reverse( const char * const sPtr )
{
if ( sPtr[ 0 ] == '\0' ) {
return;
}else {
reverse( &sPtr[ 1 ] );
putchar( sPtr[ 0 ] );
}
}
The code above generates the following result.
gets() reads in only text.
It reads everything typed at the keyboard until the Enter key is pressed.
#include <stdio.h>
// w w w . j av a 2 s .c om
int main(){
char name[20];
printf("Name:");
gets(name);
printf("%s \n",name);
return(0);
}
The code above generates the following result.
gets(var) is the same as scanf("%s",var).