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  1.  
  2. #include<stdio.h>
  3. #include<stdlib.h>
  4. #define N 100000
  5.  
  6. void insertionsort(int *A,int b);
  7. void swap(int i,int j,int *A);
  8.  
  9. int main(void)
  10. {
  11. 	int i,A[N],b,c;
  12. 	FILE *fp;
  13.  
  14. 	if((fp=fopen("rand.dat","rt"))==NULL){
  15. 		printf("error");
  16. 		exit(1);
  17. 	}
  18.  
  19. 	fscanf(fp,"%d",&b);
  20.  
  21. 	for(i=0;i<b;i++){
  22. 		A[i]=NULL;
  23. 	}
  24.  
  25. 	printf("Unsorted data\n");
  26. 	for(i=0;i<b;i++){
  27. 		fscanf(fp,"%d",&A[i]);
  28. 		printf("A[%d]=%d\n",i,A[i]);
  29. 	}
  30. 	printf("\n");
  31.  
  32. 	insertionsort(A,b);
  33.  
  34. 	printf("After sorting the data\n");
  35. 	for(i=0;i<b;i++){
  36. 		printf("A[%d]=%d\n",i,A[i]);
  37. 	}
  38.  
  39. 	fclose(fp);
  40.  
  41. 	return 0;
  42. }
  43.  
  44. void insertionsort(int *A,int b)
  45. {
  46. 	int i,j,k;
  47.  
  48. 	for(i=1;i<b;i++){
  49. 		j=A[i];
  50. 		k=i;
  51. 		while((j<A[k-1])&&(k-1>=0)){
  52. 			A[k]=A[k-1];
  53. 			k=k-1;
  54. 		}
  55. 		A[k]=j;
  56. 	}
  57. 	return;
  58. }
  59.  
Runtime error #stdin #stdout 0s 3296KB
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Standard input is empty
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error
https://ideone.com/HqOdWV
language:
C++ (gcc 8.3)
created:
12 years ago
visibility:
public

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