#include <stdio.h>
/* 考慮一下哪個(gè)輸出該用無(wú)參函數(shù)哪個(gè)輸出該用有參函數(shù)呢？ */
int learn()
{
??? int sum,i;
??? sum=sum+i;
??? for(i=0;i<=1;i++)
??? {
??????? printf("%s\n,""小明在慕課網(wǎng)上學(xué)習(xí)");
??? }
??? printf("小明在慕課上學(xué)習(xí)了%d次課",sum);
??? printf("\n");
}
int main()
{
??? learn();
??? return 0;
}