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#include <iostream>
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using namespace std;
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int main(){
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int i=1;
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switch(i){
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case 1://数字不用加引号,char单引号,字符串双引号
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cout << 1 << endl;
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break;
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case '2':
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cout << 2 << endl;
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break;
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}
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return 0;
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}
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