用C语言编写一道程序,求输入字符串的长度,且不能用strlength函数
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发布时间：2022-06-25 09:56
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时间：2024-06-21 00:05
int stringLen ( char *s )
{
int *p;
int read;
int test;
p = (int*)s;
read = 0;
while ( !(read & 0x81010100 ))
{
read = *p++;
test = 0x7efefeff + read;
read = read ^ -1 ^ test;
}
test = (char*)p - s;
if ( read & 0x100 ) return test - 4;
else if ( read & 0x10000 ) return test - 3;
else if ( read & 0x1000000 ) return test - 2;
return test - 1;
}
