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atoi_字符数组转换为整数函数
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#include <iostream>
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#include <cstdlib>
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using namespace std;
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int main()
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{
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char year1[]= "2009";
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int intYear = atoi(year1);
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cout << intYear << endl;
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string year2 = "2010";
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intYear = atoi(year2.c_str());
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cout << intYear << endl;
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return 0;
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}