leerentradastd.c

#include <stdio.h>
#include <string.h>
#include <unistd.h>
#define MAXIMO 15
int main(){

    int t, total;
    char text[MAXIMO];
    total = 0;
    printf("Introduce un texto: \n");
    
    while((t = read(0, &text, MAXIMO)) > 1){
        total = total + t;
        write(1,&text,t);
    }

    printf("Tamaño: %d\n", total);

}