有以下程序

#include <stdio.h>

#include <stdlib.h>

void fun( double *p1,double *p2,double *s)

{ s = (double *)calloc( 1,sizeof(double) );

*s = *p1 + *( p2+1 );

}

main()

{ double a[2] = { 1.1, 2.2 }, b[2] = { 10.0, 20.0 }, *s=a;

fun( a, b, s );

printf( "%5.2f\n", *s);

}

程序的输出结果是

• A.21.1

• B.11.1

• C.12.1

• D.1.1