#include
     
      int main() {    char c1,c2;    c1 = 97;    c2 = 98;    printf("c1 = %c,c2 = %c\n",c1,c2);// ASCII码的值在0 ～ 127之间，而c1、c2都大于127，所以没有对应的字符    printf("c1 = %d,c2 = %d\n",c1,c2);printf("c1 = %c,c2 = %c\n",97,98);//     return 0;}
     

c语言字符输出结果

1 c1 = a,c2 = b2 c1 = 97,c2 = 983 c1 = a,c2 = b