store matches of symbols in near bite

#include <stdio.h>

int main(void) {

    int     a[] = {'a','b','c','d','e' /*etc...*/},
            len = 0,
            size = sizeof(a)/sizeof(int);

    char str[] = "abscinence";
    char * p;

    len = sizeof(str);

    for(int i = 0; i < len; i++){
        for(int c = 0; c < size; c++){

            p = (char*) &a[c];

            if( *p != str[i] ) continue;

            p++;
            *p = *p + 1;

        }
    }

    for(int i = 0; i < size; i++){

        p = (char*) &a[i];
        p++;

        printf("\'%c\' has %d matches\n",a[i],*p);
    }

    return 0;
}