63 lines
1.5 KiB
C
63 lines
1.5 KiB
C
#include <stdio.h>
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int main(int argc, char *argv[])
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{
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if (argc < 2) {
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fprintf(stderr, "ERROR: You must provide at least one argument.\n");
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return 1;
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}
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int i;
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int argn;
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char letter;
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int up_low_sep = (int)('a' - 'A');
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int upper_floor = (int)'A';
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int upper_ceil = (int)'Z';
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for(argn = 1; argn < argc; argn++) {
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for(i = 0; '\0' != (letter = argv[argn][i]); i++) {
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int i_letter = (int)letter;
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if (upper_floor < i_letter && i_letter < upper_ceil) {
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letter = (char)(i_letter + up_low_sep);
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}
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switch(letter) {
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case 'a':
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printf("%d: 'a'\n", i);
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break;
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case 'e':
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printf("%d: 'e'\n", i);
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break;
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case 'i':
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printf("%d: 'i'\n", i);
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break;
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case 'o':
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printf("%d: 'o'\n", i);
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break;
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case 'u':
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printf("%d: 'u'\n", i);
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break;
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case 'y':
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if (i > 2) {
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printf("%d: 'Y'\n", i);
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} else {
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printf("%d: 'Y' isn't a vowel this time\n", i);
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}
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break;
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default:
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printf("%d: '%c' is not a vowel\n", i, letter);
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}
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}
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}
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return 0;
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}
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