
Y25C1 - CS50 S08 Quizz
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17 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 10 pts
¿Qué operador se utiliza para obtener la dirección de una variable en C?
*
&
%
->
2.
MULTIPLE CHOICE QUESTION
30 sec • 10 pts
¿Qué ocurre si no se libera la memoria asignada con malloc() o calloc()?
El programa se detiene inmediatamente.
El sistema operativo la libera automáticamente.
Se produce una pérdida de memoria (memory leak).
La variable se convierte en NULL.
3.
MULTIPLE CHOICE QUESTION
30 sec • 10 pts
¿Qué hace la función realloc()?
Libera memoria previamente asignada.
Asigna memoria sin inicializar.
Cambia el tamaño de un bloque de memoria previamente asignado.
Copia datos entre dos bloques de memoria.
4.
MULTIPLE CHOICE QUESTION
30 sec • 10 pts
¿Cuál es la función usada para abrir un archivo en C?
open()
file()
fopen()
fileopen()
5.
MULTIPLE CHOICE QUESTION
30 sec • 10 pts
¿Qué tipo de valor retorna fopen() si el archivo no se puede abrir?
-1
NULL
Segmentation fault
0
6.
MULTIPLE CHOICE QUESTION
30 sec • 10 pts
¿Cuál de los siguientes modos de apertura crea un archivo si no existe y permite escribir en él?
"r"
"w"
"a"
"r+"
7.
MULTIPLE CHOICE QUESTION
30 sec • 10 pts
¿Qué función se usa para cerrar un archivo abierto con fopen()?
close()
endfile()
fend()
fclose()
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