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  1. #include <stdio.h>
  2. //a{n+1} = -2a{n} + 4, a{0}=2(再帰あり版)
  3. int rec(int n){
  4.  
  5. 	if(n==0){
  6. 		return 2;
  7. 	}
  8. 	else {
  9. 		return -2*rec(n-1)+4;
  10. 	}
  11.  
  12. }
  13. int main(void) {
  14.     int n=4;
  15.     printf("数列a%dの値は%d\n", n, rec(n));
  16.    	return 0;
  17. }
  18.  
  19.  
Success #stdin #stdout 0s 5312KB
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数列a4の値は12


	

		
	 
	
	
			

					
			
			
			
			
			
			
			
			

			
			
			
		

	
		
		

			

			                        







			
			

				

	
					
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language:

						
C (gcc 8.3)

					

					

						
created:
								
						
1 day ago

					

					

						
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