#include "stdio.h" #include "stdlib.h" #include "ctype.h" #include "string.h" #define Max 100 int main() { char a[100],b[100]; int i; while(gets(a)!=NULL) { int cnt=0,j=0; for(i=strlen(a)-1;i>=0;i--) { if(isdigit(a[i])) { if(cnt==3) { b[j++]=','; cnt=0; } b[j++]=a[i]; cnt++; } } j--; for(i=j;j>=0;i--) printf("%c",b[i]); printf("\n"); } return 0; } |
Double click to view unformatted code.