C Language MCQ - English
What is (void*)0?
Representation of NULL pointer
Representation of void pointer
Error
None of above
Answer : A
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1) Comment on the following C statement. const int *ptr;
You cannot change the value pointed by ptr
You cannot change the pointer ptr itself
You May or may not change the value pointed by ptr
You can change the pointer as well as the value pointed by it
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2) What will be the output of the following C code? #include <stdio.h>
int x = 0;
void main()
{
int *const ptr = &x;
printf("%p\n", ptr);
ptr++;
printf("%p\n ", ptr);
}
3) Can you combine the following two statements into one? char *p;
p = (char*) malloc(100);
char p = *malloc(100);
char *p = (char) malloc(100);
char *p = (char*)malloc(100);
char *p = (char *)(malloc*)(100);
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4) What will be the output of the program ? #include<stdio.h>
int main()
{
char str[20] = "Hello";
char *const p=str;
*p='M';
printf("%s\n", str);
return 0;
}
5) What will be the output of the following C code? #include <stdio.h>
int main()
{
int *ptr, a = 10;
ptr = &a;
*ptr += 1;
printf("%d,%d/n", *ptr, a);
}
