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  1. #include <iostream>
  2. #include <time.h>
  3. using namespace std;
  4.  
  5. int main() {
  6. 	int n,m; scanf("%d %d", &n, &m);
  7. 	srand(time(0));
  8. 	for(int i = 0; i < n; i++){
  9. 		for(int j = 0; j < m; j++)
  10. 			printf("%4.1lf ",(rand()%200-100)/10.);
  11. 		printf("\n");
  12. 	}
  13. 	return 0;
  14. }
Success #stdin #stdout 0s 3300KB
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stdin
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2 4
stdout
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-4.0  1.7  4.0  7.0 
 1.7  7.4 -2.4  1.2
https://ideone.com/A6HTvh
A407_DLC
language:
C++14 (gcc 8.3)
created:
9 years ago
visibility:
secret

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