- #include <stdio.h> 
- //練習問題A 
- int func(int n) { 
- 	if(n < 0){ 
- 		n = -n; 
- 	} 
- 	return n; 
- } 
-   
- int main(void) { 
- 	int n, m = -3; 
-     n = func(m); 
- 	return 0; 
- } 
-   
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