c語言中循環輸出1234567890

 

1、

#include <stdio.h>

int main(void) { int i, num; puts("please input an integer."); printf("num = "); scanf("%d", &num); for (i = 1; i <= num; i++) { if (i< 10) printf("%d", i); else printf("%d", i % 10); } return 0; }