C语言的double与float类型最多只能默认输出小数位数都取6位?_百度知 ...答:double c=12345678.1234567;char d='p';printf("a=%d,%5d,%o,%x\n",a,a,a,a);printf("b=%f,%lf,%5.4lf,%e\n",b,b,b,b);printf("c=%lf,%f,%8.4lf\n",c,c,c);printf("d=%c,%8c\n",d,d);printf("e=%11.2",c);} 本例第七行中以四种格式输出整型变量a的值...