#include<stdio. h> void maino float f double d f=77777777 /*为单精度实型变量赋值* d=7777777777777777 *为双精度实型变量赋值* printf("f%fnd=%fn",f, d);#include<stdio.h> void main() { float f; double d; f=77777.77777; /*为单精度实型变量赋值*/ d=77777.77777777777777; /*为双精度实型变量赋值*/ printf("f=%f\nd=%f\n",f,d); }