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【程序填空】题目:函数fun的功能是:统计长整数n的各位上出现数字1、2、3的次数,并用 外部(全局)变量c1、c2、c3返回主函数。 例如:当n=123114350时,结果应该为:c1=3 c2=1 c3=2。 #include int c1, c2, c3; void fun(long n) { c1=c2=c3=0; while(n) { switch( 【?】) { case 1: c1++; 【?】 ; case 2: c2++; break; case 3: c3++;break; } n/=10; } } main() { long n=123114350L; 【?】 ; printf("\nThe result: \n"); printf("n=%ld c1=%d c2=%d c3=%d\n",n,c1,c2,c3); }
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