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#include <bits/stdc++.h>
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using namespace std;
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const int N = 110;
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char a[N];
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int main() {
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scanf("%s", a + 1); //输入abcdef，共6个字符,放过下标为0的位置，从下标为1开始
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int len = strlen(a + 1); //含义：从a下标偏移为1开始，计算到末尾\0的长度
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printf("%d", len); //输出答案：6,理解：让从1开始，到末尾，尾巴在哪里自己找，计算返回长度
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return 0;
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}
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