58 lines
1.1 KiB
C
58 lines
1.1 KiB
C
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#include <stdio.h>
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typedef enum {
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TYPE_INT,
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TYPE_FLOAT,
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TYPE_STRING,
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} VariantType;
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struct Variant {
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VariantType type;
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union {
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int as_integer;
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float as_float;
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char *as_string;
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} data;
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};
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typedef struct Variant Variant;
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void Variant_print(Variant *var)
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{
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switch(var->type) {
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case TYPE_INT:
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printf("INT: %d\n", var->data.as_integer);
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break;
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case TYPE_FLOAT:
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printf("FLOAT: %f\n", var->data.as_float);
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break;
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case TYPE_STRING:
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printf("STRING: %s\n", var->data.as_string);
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break;
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default:
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printf("UNKNOWN TYPE: %d", var->type);
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}
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}
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int main(int argc, char *argv[])
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{
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Variant a_int = {.type = TYPE_INT, .data.as_integer = 100};
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Variant a_float = {.type = TYPE_FLOAT, .data.as_float = 100.34};
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Variant a_string = {.type = TYPE_STRING, .data.as_string = "YO DUDE!"};
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Variant_print(&a_int);
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Variant_print(&a_float);
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Variant_print(&a_string);
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// here's how you access them
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a_int.data.as_integer = 200;
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a_float.data.as_float = 2.345;
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a_string.data.as_string = "Hi there.";
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Variant_print(&a_int);
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Variant_print(&a_float);
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Variant_print(&a_string);
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return 0;
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}
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