66 lines
1.5 KiB
Plaintext
66 lines
1.5 KiB
Plaintext
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// Public domain / CC0. Use freely for any purpose. RoyR 2026
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// switch.cm - Switch statement demonstration
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// Demonstrates: switch/case, default, break, fall-through
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void printf(uint8 *fmt);
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uint8 *get_day_name(int32 day) {
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switch (day) {
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case 0: return "Sunday";
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case 1: return "Monday";
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case 2: return "Tuesday";
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case 3: return "Wednesday";
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case 4: return "Thursday";
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case 5: return "Friday";
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case 6: return "Saturday";
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default: return "Invalid day";
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}
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}
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int32 is_weekend(int32 day) {
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switch (day) {
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case 0:
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case 6:
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return 1;
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default:
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return 0;
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}
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}
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uint8 *get_grade(int32 score) {
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int32 category = score / 10;
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switch (category) {
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case 10:
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case 9:
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return "A";
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case 8:
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return "B";
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case 7:
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return "C";
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case 6:
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return "D";
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default:
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return "F";
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}
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}
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int32 main(void) {
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printf("Days of the week:\n");
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for (int32 i = 0; i < 8; i = i + 1) {
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printf(" Day %d: %s", i, get_day_name(i));
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if (is_weekend(i)) {
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printf(" (weekend!)");
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}
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printf("\n");
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}
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printf("\nGrade calculator:\n");
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int32 scores[6] = { 95, 87, 76, 65, 54, 100 };
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for (int32 i = 0; i < 6; i = i + 1) {
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printf(" Score %d: Grade %s\n", scores[i], get_grade(scores[i]));
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}
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return 0;
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}
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