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  1. #include <stdio.h>
  2.  
  3. int main(){
  4.     int a[20][20];
  5.     int m, n;
  6.     printf("nhap m hang: ");
  7.     scanf("%d", &m);
  8.     printf("nhap n cot: ");
  9.     scanf("%d", &n);
  10.     for(int i = 0; i < m; ++i){
  11.         for(int j = 0; j < n; ++j){
  12.             printf("a[%d][%d] = ", i, j);
  13.             scanf("%d", &a[i][j]);
  14.         }
  15.     }
  16.     printf("\nMa tran vua nhap:\n");
  17.     for(int i = 0; i < m; ++i){
  18.         for(int j = 0; j < n; ++j){
  19.             printf("%d ", a[i][j]);
  20.         }
  21.         printf("\n");
  22.     }
  23.     int x;
  24.     int dem =0;
  25. 	printf ("nhap x:");
  26. 	scanf ("%d",&x);
  27. 	for (int i=1;i<=m;i++){
  28. 		for (int j=1;j<=n;j++){
  29. 			if (x==a[i][j]){
  30. 				printf("thay %d o vi hang %d,cot %d\n",x,i+1,j+1);
  31. 				dem++;
  32. 			}
  33. 		}
  34. 	}
  35. 	if (dem==0){
  36. 	 printf ("Khong tim thay %d trong ma tran\n",x );
  37. 	}
  38. 	if (m == n) {
  39.         int tongCheoChinh = 0;
  40.         int tongCheoPhu = 0;
  41.         printf("\nCac ptu cua duong cheo chinh: ");
  42.         for (int i = 0; i < m; i++) {
  43.             printf("%d ", a[i][i]);
  44.             tongCheoChinh += a[i][i];
  45.         }
  46.         printf("\nTong duong cheo chinh = %d\n", tongCheoChinh);
  47.         printf("Cac phan tu tren duong cheo phu la: ");
  48.         for (int i = 0; i < n; i++) {
  49.             printf("%d ", a[i][n - 1 - i]);
  50.             tongCheoPhu += a[i][n - 1 - i];
  51.         }
  52.         printf("\nTong duong cheo ph? = %d\n", tongCheoPhu);
  53.     } else {
  54.         printf("\nMa tran ko ton tai,ko co duong cheo chinh,duong cheo phu.\n");
  55.     }
  56.     return 0;
  57. }
Success #stdin #stdout 0s 5324KB
comments (?)
stdin
copy 
Standard input is empty
stdout
copy 
nhap m hang: nhap n cot: 
Ma tran vua nhap:






































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































































nhap x:Khong tim thay 0 trong ma tran

Ma tran ko ton tai,ko co duong cheo chinh,duong cheo phu.
https://ideone.com/OGheGU
language:
C (gcc 8.3)
created:
8 hours ago
visibility:
public

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