40 lines
580 B
C
40 lines
580 B
C
#include <stdio.h>
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#include <stdlib.h>
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char* mystrcpy(char* dest, const char* src)
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{
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char* ret = dest;
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if (NULL != dest && NULL != src)
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while ((*dest++ = *src++) != '\0')
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;
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return ret;
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}
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char* mystrncpy(char* dest, const char* src, size_t n)
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{
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int i;
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for (i = 0; i < n && (dest[i] = src[i]); i++)
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;
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for (; i < n; i++)
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dest[i] = '\0';
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return dest;
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}
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int main( )
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{
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char str1[] = "helloworld";
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char str2[128];
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// mystrcpy(str2, str1);
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mystrncpy(str2, str1, 5);
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puts(str2);
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exit(0);
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} |