20 lines
557 B
C++
20 lines
557 B
C++
#include<iostream>
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#include<iomanip>
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using namespace std;
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int main(int argc, char const *argv[])
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{
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char s[20]="this is a string";
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double digit=-36.96656;
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cout<<setw(30)<<left<<setfill('*')<<s<<endl;
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cout<<dec<<setprecision(4)<<digit<<endl;
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cout<<dec<<15<<endl;
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//setbase(int x)设置进制后，后面所有操作都是按照这个进制来计算！
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cout<<setbase(10)<<15<<endl;
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//四舍五入,并保留2位有效数组
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float x=6.6937;
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cout<<float(int(x*1000+0.5)/1000.0)<<endl;
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system("pause");
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return 0;
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}
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