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以下程序的运行结果是。#include main(){int swap();extern int a,b;a=3;b=10;swap();printf("a=%d,b=%d\n",a,b);}int a,b;swap(){int temp;temp=a;a=b;b=temp;}

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#include void sub(float x,float y,float z){y=y-1.0;z=z+x;}void main(){float a=2.5,b=9.0,pa,pb;pa=&a;pb=&b;sub(b-a,pa,pa);printf("%g\n",a);}

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以下程序的运行结果是。#include int func(int a,int b){int c;c=a+b;return c;}void main(){int x=6,y=7,z=8,r;r=func((x--,y++,x+y),z--);printf("%d\n",r);}