C. Data structures
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My throat crazyyyyyyy
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Answer:
#include <stdio.h>
void first() {
printf("first\n");
}
void second() {
printf("second\n");
}
void third() {
printf("third\n");
}
int main() {
first();
second();
third();
printf("End of program.\n");
return 0;
}
Basic Input-Output System