54 lines
674 B
C
54 lines
674 B
C
#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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int main()
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{
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char *str = "hello";
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printf("%d %d\n", sizeof(str), strlen(str));
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// out: 8 5
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//(F) strcpy(str, "world");
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// 这里企图把 "world" 覆盖 "hello"这个串常量
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str = "world";
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puts(str);
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// char str[] = "hello";
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// printf("%d %d\n", sizeof(str), strlen(str));
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// out :6 5
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#if 0
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char str[] = "hello";
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// str[6]
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//(F) str = "world";
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strcpy(str, "world");
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puts(str);
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#endif
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#if 0
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char str[] = "I love china!";
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char *p = str + 7;
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puts(str);
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puts(p);
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// I love china!
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// china!
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#endif
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exit(0);
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} |