// Online C compiler to run C program online #include <stdio.h> #include <stdbool.h> #include <string.h> int main(){ int len = 5; char air[len]; puts("Enter a name: "); gets(air); for(int i = 0; i < len; i++){ printf("%c first occured at index %d\n",air[i],i); } return 0; }