git

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diff --git a/main.c b/main.c
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new file mode 100644
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--- /dev/null
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+++ b/main.c
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@@ -0,0 +1,23 @@
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+#include <stdio.h>
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+
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+int func(int num);
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+void print_int(int num);
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+
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+int main() {
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+	int i;
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+
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+	for (i = 0; i < 10; i++) {
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+		print_int(func(i));
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+	}
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+
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+	return 0;
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+}
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+
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+int func(int num) {
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+	return num * num;
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+}
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+
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+void print_int(int num) {
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+	printf("%d", num);
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+}
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+
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