#include<stdio.h>void main(){ double a,b,c; a=11123112.11; b=213212.55; c=a+b; printf("a+b=%f",c);}
for(i=10;i>=1;i--){ if(a[i+3]>='0'&&a[i+3]<='9') a[i+3]=a[i+3]-'0'+b[i];} 输出a[14]从1开始但有局限性,只能在不进位的时候输