63 lines
1.0 KiB
C
63 lines
1.0 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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printf("ERROR: You need at least 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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int arg = 1;
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for (arg = 1; arg < argc; arg++) {
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for (i = 0; argv[arg][i] != '\0'; i++) {
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printf("(%d) ", arg);
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char letter = argv[arg][i];
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// lowercase letters
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if (letter >= 'A' && letter <= 'Z') {
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letter += ('a' - 'A');
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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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// 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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} else {
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printf("%d: %c is not a vowel\n", i, letter);
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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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