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以下程序的输出结果是（）。#include #include void fun( char *w, int m){char s, *p1, *p2;p1 = w;p2 = w+m-1;while(p1 < p2){s = *p1 ++;*p1 = *p2--;*p2 = s;}}int main(){char a[] = "ABCDEFG";fun(a, strlen(a));puts(a);return 0;}
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