/**************************/
/* CPE 101 Fall 2008      */
/* Alex Dekhtyar          */
/*                        */
/* Arrays. Example 2      */
/**************************/

#include <stdio.h>

int main() {

int vector[5];     /* array declaration */
int i;
int sum;
float mean;
int success;

for(i=0;i<=4;i++) {
   scanf("%d",&vector[i]);  /* reading an array element */
}


/* statistical computations using an array */

sum=0;
for(i=0;i<=4;i++) {
  sum += vector[i];
}

mean = sum/5.0;

printf("Mean = %f\nSum = %d\n",mean, sum);

/* Good news: We get to keep the data. Can answer queries now! */

success = 0;
do {
   printf("Enter index:");
   scanf("%d",&i);

  /* Let's answer the query if we can */
  if (i>=0 && i<5) {
     printf("vector[%d]= %d and is %f %% of total sum\n\n",i, vector[i],
             vector[i]*100.0/sum);
  }
  else {
     success = 1;
  }
} while (!success);




return 0;
}