I am writing a program in c that prints out the most frequent letter and the most frequent digit from input. The program that I have written below is working fine, I am having trouble with the output. The output should print out the most frequent digit and most frequent letter when they are entered. I am having trouble with the conditional statement for the output to show most frequent character only when letters are entered from input and not show the digits print statement. Also vice versa when digits are only entered I want the output to only show the most frequent digit and not the most frequent letter print statement. Basically I'm having trouble about what if, else condition I should use.

This is my code below:

#include #include

struct cf { char ch; /* ch is a character */ int fr; /* a number */ };

int process_data(char lc, struct cf cc[], int s); void ss(struct cf cc[], int s);

int main() { int sl = 0, sd = 0; struct cf letters[200]; struct cf digits[10]; char lc; int i, l;

/* Loop until end of file */ while ((lc = getchar()) != EOF) { if(isalpha(lc)){ l = process_data(lc, letters, sl); if (l >= 0) { letters[l].ch = lc; letters[l].fr++; /* Increment fr */ } else{ letters[sl].ch = lc; letters[sl].fr = l; sl++; }

}

else if(isdigit(lc)){ l = process_data(lc, digits, sd); if(l >= 0){ digits[l].ch = lc; digits[l].fr++; /* increment fr */ } else{ digits[sd].ch = lc; digits[sd].fr =l; sd++; }

} }

/* Call ss function */ ss(letters, sl); ss(digits, sd);

/* Print answer */ printf("Most frequent letter: %c ", letters[0].ch); printf("Most frequent digit: %c ", digits[0].ch);

return 0; }

int process_data(char lc, struct cf cc[], int s) { int i; for (i = 0; i < s; i++) if (cc[i].ch == lc) /* Compare cc[i].ch to lc */ return i; return -1; }

void ss(struct cf cc[], int s) { int f, i, x; struct cf X;

for (f = 0; f < s - 1; f++) { /* Get next x */ x = f; for (i = f + 1; i < s; i++) if (cc[i].fr > cc[x].fr) x = i; /* set x to i y = i - 1; */

/* Swap values */ X = cc[f]; cc[f] = cc[x]; cc[x] = X; } }