#包含“stdio.h”
int main(int argc,char *argv[]){
int n,s,t,I;
for(s=10,n = 2;n & lt9;n++){
for(t=10,I = 1;我& ltn;t*=10,i++);
s+=(t-1)/9 * 2;
}
printf("3+23+223+...+22222223 = %d\n ",s);
返回0;