#include"stdio.h" void main() { char s[] = "12134211" ; int v[4]={0,0,0,0},k,i; for ( k=0;s[k];k++) { switch (s[k]) { case '1' :i=0; case '2' :i=1; case '3' :i=2; case '4' :i=3; } v[i]++; } for (k=0;k<4;k++) printf ( "%d" ,v[k]); }