#include <stdio.h>
#include<string.h>
int main()
{
char str1[] = "MCA\0";
char str2[] = {'M', 'C', 'A'};
int n1 = sizeof(str1)/sizeof(str1[0]);
int n2
= sizeof(str2
)/strlen(str2
); printf("n1=%d,n2=%d", n1
, n2
); return 0; }
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