array and point problem
- by bezetek
Here, I have a bad program. Its outputs confusing me, anyone can tell me why ?
#include <stdio.h>
#include <stdlib.h>
int main()
{
int i = 0;
char *a_result[10];
char *b_result[10];
for (i = 0; i < 10; i++)
{
char a_array[10];
char *b_array = malloc(10*sizeof(char));
int j = 0;
for (j = 0; j < 9; j++)
{
a_array[j] = 'a' + i;
b_array[j] = 'a' + i;
}
a_array[j] = '\0';
b_array[j] = '\0';
a_result[i] = a_array;
b_result[i] = b_array;
}
for (i = 0; i < 10; i++)
printf("a_result: %s b_result: %s\n",a_result[i],b_result[i]);
return 0;
}
I think the a_result and b_result should be the same, but it is not.
Here is the output on my computer.
a_result: jjjjjjjjj b_result: aaaaaaaaa
a_result: jjjjjjjjj b_result: bbbbbbbbb
a_result: jjjjjjjjj b_result: ccccccccc
a_result: jjjjjjjjj b_result: ddddddddd
a_result: jjjjjjjjj b_result: eeeeeeeee
a_result: jjjjjjjjj b_result: fffffffff
a_result: jjjjjjjjj b_result: ggggggggg
a_result: jjjjjjjjj b_result: hhhhhhhhh
a_result: jjjjjjjjj b_result: iiiiiiiii
a_result: jjjjjjjjj b_result: jjjjjjjjj
any explanation about this is appreciate!
