35 lines
874 B
C
35 lines
874 B
C
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// 编写一个程序，要求用户输入一个字符串，然后动态创建一个字符数组，使其能够容纳用户输入的字符串。然后将用户输入的字符串复制到动态创建的数组中，并打印该字符串。
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#include <stdio.h>
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#include <stdlib.h>
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char *str_cpy(char *dest, const char *src)
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{
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int cnt;
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while (src[cnt++])
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;
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char *res = (char *)malloc(cnt * sizeof(char *));
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if (NULL == res)
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{
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perror("malloc");
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exit(0);
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}
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for (int i = 0; i < cnt; i++)
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res[i] = src[i];
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return res;
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}
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int main()
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{
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char s1[100];
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printf("请输入一个字符串: ");
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// scanf("%s", s1);
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fgets(s1, sizeof(s1), stdin); // scanf() 不能接收换行，故改用 fgets()
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char *s2 = str_cpy(s2, s1);
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printf("s2 被复制后的结果为: %s", s2);
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free(s2);
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return 0;
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}
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