/*
  Name:    ex8-6.c
  Purpose: B1FF filter : practice with one dimensional arrays
  Author:  Bill Slough

*/

#include <stdio.h>
#include <ctype.h>
#include <stdbool.h>

#define N 80        /* maximum length of input line */

int main() {
    char line[N];   /* holds one line of input */
    int i;
    int lineLength;
    char ch;
    bool lineOverflow;

    /* Get a line of input, being careful not to overfill the buffer */
    printf("Enter message: ");
    i = 0;
    while (i < N && (ch = getchar()) != '\n') {
        line[i++] = ch;
    }
    lineLength = i;
    lineOverflow = (lineLength == N) && (getchar() != '\n');

    /* Terminate execution if there were too many input characters */
    if (lineOverflow) {
        printf("Error in input: buffer overflow.\n");
        return 1;
    }

    /* translate and output the coded message */
    printf("In B1FF speak: ");
    for (i = 0; i < lineLength; i++) {
        ch = toupper(line[i]);
        switch(ch) {
        case 'A': ch = '4'; break;
        case 'B': ch = '8'; break;
        case 'E': ch = '3'; break;
        case 'I': ch = '1'; break;
        case 'O': ch = '0'; break;
        case 'S': ch = '5'; break;
        }
        printf("%c", ch);
    }
    printf("!!!!!!!!!!\n");
    
    return 0;
}