(C语言)交换两组数/出现9的次数

交换两数组的值 #include <stdio.h> #include <stdlib.h> int main() { int i; int tmp; int a[4] = { 1, 2, 3, 4 }; int b[4] = { 6, 7, 8, 9 }; for (i = 0; i < 4; i++) { tmp = a[i]; a[i] = b[i]; b[i]

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