⟩ Which among the following allows fast file system recovery? a) Ext2 b) Journaling c) Caching d) Sysfs
b) Journaling
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In this program the allocated memory block can store
<pre lang="c" line="1" cssfile="hk1_style">
#include<stdio.h>
#include<stdlib.h>
int main()
{
int *ptr;
ptr = malloc(10);
return 0;
}
a) int
b) char
c) float
d) all of the mentionedPlease tell me output of this program?
#include<stdio.h>
#include<stdlib.h>
int main()
{
int *ptr;
ptr = (int *)calloc(1,sizeof(int));
if (ptr != 0)
printf("%dn",*ptr);
return 0;
}
a) 0
b) -1
c) garbage value
d) none of the mentionedProgram given below will allocate the memory of ___ bytes for pointer "ptr".
#include<stdio.h>
#include<stdlib.h>
int main()
{
int *ptr;
ptr = (int*)malloc(sizeof(int)*4);
ptr = realloc(ptr,sizeof(int)*2);
return 0;
}
a) 2
b) 4
c) 8
d) none of the mentionedIn which condition this prgram will print the string "google"?
#include<stdio.h>
#include<stdlib.h>
int main()
{
int *ptr;
ptr = (int *)malloc(sizeof(int)*10);
if (ptr == NULL)
printf("googlen");
return 0;
}
a) if the memory could not be allocated to the pointer "ptr"
b) if the memory has been allocated to the pointer "ptr" successfully
c) it will never print
d) none of the mentionedWhat is the output of this program?
#include<stdio.h>
#include<stdlib.h>
int main()
{
int ret;
int *ptr;
ptr = (int *)malloc(sizeof(int)*10);
free(ptr);
free(ptr);
return 0;
}
a) it will print nothing
b) it will give segmentaion fault
c) undefined behaviour
d) none of the mentioned
