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写出下列程序的执行结果是：__________________。#includeusing namespace std;void sort( double x,double y );void sort( double x,double y,double z );void main(){ sort( 5.6, 79 );}void sort(double x,double y){ if ( x>y ) cout << x <<","<< y << endl; else cout << y << "," << x << endl;}

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写出下列程序的执行结果是：__________________。#includeusing namespace std;int f1( int a, int b ) { return a + b ;}int f2( int a, int b ){ return a - b ;}int f3( int( t )( int, int ), int a, int b ) { return ( t )( a, b ) ;}void main(){ int ( *p )( int, int ); p = f1 ; cout << f3( p, 4, 8 ) <<","; p = f2 ; cout << f3( p, 8, 4 );}

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写出下列程序的执行结果是：__________________。#includeusing namespace std;void func( int , int , int & ) ;void main(){ int a=10, b=20; int p=&a, q=&b; func( p, q, p ); cout << "p=" << p << ",q=" << q << endl;}void func( int t1 , int t2 , int & rt ){ t1 += 5 ; t2 += 5 ; rt = t1 ; *rt += 5 ; }