[c]Question and Exercise (Tossing chance)

The requirement is to ask user to input head or tail in the program and display the number of heads and tails and the probability in percentage.
output will be like this:

Choose head or tail (valid choices is h or t): h
Choose head or tail (valid choices is h or t): h
Choose head or tail (valid choices is h or t): t
Choose head or tail (valid choices is h or t): t
Choose head or tail (valid choices is h or t): t
Choose head or tail (valid choices is h or t): t
Choose head or tail (valid choices is h or t): t
Choose head or tail (valid choices is h or t): t
Number of heads: 2
Number of tails: 6
Percent heads: 25.00%
Percent tails: 75.00%

Sample code below:

#include <stdio.h>

int main()
{
    int i,hi=0,ti=0;
    char choices;
    float headChance,tailChance;
    for(i=1;i<=8;i++)
    {
        printf("Choose head or tail (valid choices is h or t): ");
        scanf("%c%*c",&choices);
        switch(choices)
        {
            case 'h':
            case 'H':
            hi++;
            break;
            case 't':
            case 'T':
            ti++;
            break;
            default:
            printf("You have entered an invalid choice.\n");
      
        }
    }
    headChance = (float)(hi)/8 * 100;
    tailChance = (float)(ti)/8 * 100;
    printf("Number of heads: %d\n", hi);
    printf("Number of tails: %d\n", ti);
    printf("Percent heads: %.2f%%\n", headChance);
    printf("Percent tails: %.2f%%\n", tailChance);
    return 0;
}

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