char与 unsigned char类型变量打印，注意事项

char与 unsigned char类型变量打印，注意事项

char ss; unsigned char ss_1; // 打印数值 printf("%d\n", ss); // char printf("%u\n", ss_1); // unsigned char // 以字符形式打印输出 printf("%c\n", ss); printf("%c\n", ss_1);