How many bytes of memory will the following code reserve? #include #include int main() { int *p; p = (int *)malloc(256 * 256); if(p == NULL) printf("Allocation failed"); return 0; }

Home » C Programming » Memory Allocation

How many bytes of memory will the following code reserve? #include<stdio.h> #include<stdlib.h> int main() { int p; p = (int )malloc(256 * 256); if(p == NULL) printf("Allocation failed"); return 0; }

65536
Allocation failed
Error
No output

Correct Answer: Allocation failed

Explanation:

Hence 256*256 = 65536 is passed to malloc() function which can allocate upto 65535. So the memory allocation will be failed in 16 bit platform (Turbo C in DOS).

If you compile the same program in 32 bit platform like Linux (GCC Compiler) it may allocate the required memory.

← Previous Question Next Question→

More Questions from Memory Allocation

What will be the output of the program? #include #include int main() { union test { int i; float f; char c; }; union test *t; t = (union test *)malloc(sizeof(union test)); t->f = 10.10f; printf("%f", t->f); return 0; }
What will be the output of the program (16-bit platform)? #include #include int main() { int *p; p = (int *)malloc(20); printf("%d\n", sizeof(p)); free(p); return 0; }
What will be the output of the program? #include #include int main() { int *p; p = (int *)malloc(20); /* Assume p has address of 1314 */ free(p); printf("%u", p); return 0; }
Assume integer is 2 bytes wide. What will be the output of the following code? #include #include #define MAXROW 3 #define MAXCOL 4 int main() { int (*p)[MAXCOL]; p = (int (*) [MAXCOL])malloc(MAXROW *sizeof(*p)); printf("%d, %d\n", sizeof(p), sizeof(*p)); return 0; }
Assume integer is 2 bytes wide. How many bytes will be allocated for the following code? #include #include #define MAXROW 3 #define MAXCOL 4 int main() { int (*p)[MAXCOL]; p = (int (*) [MAXCOL])malloc(MAXROW *sizeof(*p)); return 0; }

Discussion & Comments

No comments yet. Be the first to comment!

Join Discussion

How many bytes of memory will the following code reserve? #include<stdio.h> #include<stdlib.h> int main() { int *p; p = (int *)malloc(256 * 256); if(p == NULL) printf("Allocation failed"); return 0; }

More Questions from Memory Allocation

Discussion & Comments

How many bytes of memory will the following code reserve? #include<stdio.h> #include<stdlib.h> int main() { int p; p = (int )malloc(256 * 256); if(p == NULL) printf("Allocation failed"); return 0; }