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#include<cstdio> //使用freopen语句，须调用cstdio库 int main() { freopen("reopen.in", "r", stdin); freopen("reopen.out", "w", stdout); int a; scanf("%d",&a); printf("%d",a); fclose(stdin);fclose(stdout); return 0; }
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Compiling Program...

Command line arguments:
Standard Input: Interactive Console Text
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