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57 lines
838 B
57 lines
838 B
#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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printf("ERROR: You need one argument.\n");
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// this is how you abort a program
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return 1;
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}
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int i = 0;
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for (i = 0; argv[1][i] != '\0'; i++) {
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char letter = argv[1][i];
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switch (letter) {
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case 'a':
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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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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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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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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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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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case 'Y':
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// why i > 2? is this a bug?
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if (i > 2) {
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// it's only sometimes Y
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printf("%d: 'Y'\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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return 0;
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}
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