题目内容

下列程序段的输出结果是#include int main(void){int m, k = 0, s = 0;for (m = 1; m <= 4; m++) {switch (m % 4) {case 0:case 1: s += m; break;case 2:case 3: s -= m; break;}k += s;}printf("%d\n", k);return 0;}

A. 10
B. -2
C. -4
D. -12

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