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#include <stdio.h>
int main(void) { int label; int sum = 0; int counts = 0; do { int i; puts("please input the number i."); printf("i = "); scanf("%d", &i); sum = sum + i; counts = counts + 1; puts("please chose label 0 to continue or other to exit."); printf("label = "); scanf("%d", &label); } while (label == 0); printf("sum = %d.\n", sum); printf("mean = %f.\n", (double)sum / counts); return 0; }