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7-22.以下程序的运行结果是______#include void swap(int a, int b){a = a + b;b = a – b;a = a – b;}int main(){int a = 5, b = 6;swap(a, b);printf(“a = %d, b = %d”, a, b);return 0;}

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7-23.以下程序的运行结果是______void swap(int x,int y){int t;t=x;x=y;y=t;printf("x=%d,y=%d;",x,y);}void main(){int x=3,y=4;swap(x,y);printf("x=%d,y=%d\n",x,y);}

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