#include <stdio.h>
#include <ctype.h>
void main() {
char buffer[80];
int i = 0;
int num_letters = 0;
int num_digits = 0;
printf("\n string with char and digits:\n");
gets(buffer); /* Read a string into buffer */
while(buffer[i] != '\0') {
if(isalpha(buffer[i]))
num_letters++; /* Increment letter count */
if(isdigit(buffer[i++]))
num_digits++; /* Increment digit count */
}
printf("\n The string contained %d letters and %d digits.\n",
num_letters, num_digits);
}
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