Substrating two matrices in C

1:  #include<stdio.h>  
2:  #include<stdlib.h>  
3:    
4:  int main()  
5:  {  
6:      int i,j;  
7:      int a[3][3],b[3][3],c[3][3];  
8:        
9:      printf("\nEnter the element of first matrix:\n");  
10:          for(i=0; i<3; i++)  
11:          {  
12:              for(j=0; j<3; j++)  
13:              {  
14:                  scanf("%d",&a[i][j]);  
15:              }  
16:          }  
17:              printf("\nEnter the elements of second matrix:\n");  
18:                      for(i=0; i<3; i++)  
19:          {  
20:              for(j=0; j<3; j++)  
21:              {  
22:                  scanf("%d",&b[i][j]);  
23:              }  
24:          }  
25:            
26:            
27:          for(i=0; i<3; i++)  
28:          {  
29:              for(j=0; j<3; j++)  
30:              {  
31:                  c[i][j] = a[i][j] - b[i][j];  
32:              }  
33:          }  
34:            
35:          printf("\nThe resultant matrix is:\n");  
36:          for(i=0; i<3; i++)  
37:          {  
38:              for(j=0; j<3; j++)  
39:              {  
40:                  printf("%d\t",c[i][j]);  
41:              }  
42:              printf("\n");  
43:          }                          
44:      return 0;  
45:  }  
46: