array declaration

[scifreak]

i defined the array inside an if function. please guide me as to how am i wrong. THANK U.

	else if (op[6] == 'q')
		{
			printf("you have selected Matrix function \n");
		    printf("please key in the dimension of the matrix");
			scanf("%i %i",&b,&t);
	        
			int m[b][t];
			
			for(x=0;x<b;x++)
			{
			for(y=0;y<t;y++)
			{
			printf("please enter the values of matrix");
			scanf("%i",&c);
			fflush(stdin);
			m[b][t]=c;
			printf("The matrix entered",m);
			}
			}
		}

[tabstop]

m[b][t] is not a valid place in your array, as you have defined it. The first index needs to be some number less than b (b is too big), and the second element needs to be some number less than t (t is too big).

[spygg]

You can't use variable as the array index

[quzah]

You can't use variable as the array index

If you mean for a size declaration, you can in C99.


Quzah.

[anduril462]

A few more things:

1. Don't fflush stdin: Cprogramming.com FAQ > Why fflush(stdin) is wrong
2. Read the printf documentation, the following is invalid:

   printf("The matrix entered",m);