When "memcpy" should be used over "strcpy" and viceversa?
Thanks
strcpy is used to copy null terminated strings, e.g.
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char *strcpy(char *destination, const char *source);
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copy string source to string destination stopping after the terminating null-character is copied; return a pointer to destination,e.g.
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char ch1[10]="hello";
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char ch2[10];
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strcpy(ch2, ch1);
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"hello" + terminating null is copied from ch1[] to ch2[]
memcpy() is an efficent way to copy memory areas
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void *memcpy(void *destination, const void *source, size_t number);
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copy at most number bytes from source to destination; return a pointer to destination
you can use it as a general tool to copy areas of memory, e.g.
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int a[10] = {1,2,3,4,5,6,7,8,9,10};
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int b[10]={0};
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memcpy(b, a, sizeof(int)* 10);
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10 ints are copied from a[] to b[]
for discussion on efficency of memcpy see
http://www.embedded.com/showArticle.jhtml?articleID=19205567
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