/*
 * C Program To Find the Highest Frequency Character in a String
 */
#include <stdio.h>
#include <string.h>

char string1[100], visited[100];
int count[100] = {0}, flag = 0;

void main()
{
    int i, j = 0, k = 0, l, max, index;
    printf("Enter a string : ");
    scanf("%[^\n]s", string1);
    l = strlen(string1);
    for (i = 0; i < l; i++)
        {
            if (i == 0)
                {
                    visited[j++] = string1[i];
                    count[j - 1]++;
                }
            else
                {
                    for (k = 0; k  < j; k++)
                        {
                            if (string1[i] == visited[k])
                                {
                                    count[k]++;
                                    flag = 1;
                                }
                        }
                    if (flag == 0)
                        {
                            visited[j++] = string1[i];
                            count[j - 1]++;
                        }
                    flag = 0;
                }
        }
    for (i = 0; i < j; i++)
        {
            if ((i == 0) && (visited[i] != ' '))
                {
                    max = count[i];
                    continue;
                }
            if ((max < count[i]) && (visited[i] != ' '))
                {
                    max = count[i];
                    index = i;
                }
        }
    printf("\nMax repeated character in the string = %c ", visited[index]);
    printf("\nIt occurs %d times", count[index]);
}
/*
*OUTPUT:
Enter a string : Welcome to Sanfoundry's C Programming Class !

Max repeated character in the string = o
It occurs 4 times
*/