#include <stdio.h>
//練習問題A
int func(int n);
 
int main(void) {
	int n, m = -3;
    n = func(m);
	return 0;
}
int func(int n) {
    if (n < 0) {
        return -n;  // 負の数なら符号を反転
    } else {
        return n;   // それ以外はそのまま返す
    }
}
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