30 lines
417 B
C
30 lines
417 B
C
#include <stdio.h>
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#include <stdlib.h>
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int main()
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{
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int *p = NULL;
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p = malloc(sizeof(int));
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if (NULL == p)
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{
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printf("malloc() error!\n");
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exit(1);
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}
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*p = 10;
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printf("%p-->%d\n", *p);
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free(p);
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p = NULL; // !important
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printf("%p-->%d\n", *p);
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// 0x5a677368 -- > 1516729192
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*p = 123;
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printf("%p-->%d\n", *p);
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// 0x7b -- > 0
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exit(0);
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} |