/*ch4_13*/
/*getchar()函數(shù)的格式和作用*/
#include<stdio.h>	
main()
{
    char  ch;
    printf("Please input two character: ");
    ch=getchar();			/*輸入1個(gè)字符并賦給ch */
    putchar(ch);
    putchar('\n');
    putchar(getchar());	               /*輸入一個(gè)字符并輸出*/
    putchar('\n');
}