Answer Happy

1) What is the output of the program?
(2) Does this program have any memory leak? If yes, where
should free be placed? use line number in the figure to
answer. A sample answer could be "free should be placed under
line 23".
(3) What is unknown function 1? choosing
from main, mystery and verify_array.
(4) What is unknown function 2? choosing
from main, mystery and verify_array.
(5) What is the variable name of unknown_var 3?
(6) What is the value of unknown_var 2?
1 #include <stdio.h> 2 #include <stdlib.h> 3 #include <string.h> 4 int verify_array(char * s) { 5 for(int i=0; i<strlen(s); i++) 6 if(!(s=='.' || s == 'C' || s==')' || 7 (s <='9' && s >= '0'))) { return 0; 9 } 10 return 1; 8 11 } 12 13 v char * mystery(char * arr, int size) { 14 char * new_num = (char*) malloc(sizeof(char)*(size+6)); 15 char code [5] = "(212)"; 16 for (int i =0;i<5;i++) 17 { 18 new_num=code; 19 } 20 for (int i=0;i<=size;i++) { 22 new_num [5+i)=arr; 23 } 24 25 size = size +5; 26 return new_num; 21 27 } 28 29 int main(void) { 30 char number[] = "745-1234"; 31 char * ret; 32 int size = strlen(number); 33 ret = mystery (number, size); 34 if(verify_array(ret)) 35 printf("mystery return: %s, %d", ret, size); 36 return 0; 37 }

Starting address: Oxdeadbeef (212) 745 Low address - 1 2 3 4 Heap unknown function 1 unknown_var 1: unknown function 2 unknown_var 2: unknown_var 3: Oxdeadbeaf undefined unknown_var 4: 74/5 - 1 2 3 4 High address Stack