# C program to multiply two matrices without function

C program to multiply two matrices without function

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## Code Explanation :

In this example, we are going to multiply two matices that are given by user without function.

In this program, user input matrix row and column and give matrix elements and then after we multiply these two matrices.

Here we have uses `for loop` to read and multiply matrix.

This is not the better way to write code. This is simplified using function.

It is better to do this example using function because we use `for loop` for many times. That code, We have not to be used in `function` method.

## `Multiply two matrix using function`

We are going to represent this code into algorithm and flowchart.

## Algorithm

```STEP 1 : Start

STEP 2 : Declare  array  a,  b,  mul  with r, c,
i, j and k

STEP 3 : Read r and c

STEP 4 : Repeat this step until i < r
STEP 4.1 : Repeat this step until j < c
STEP 4.1.1 : Read for a[i][j]
STEP 4.1.2 : j++
STEP 4.2 : i++

STEP 5 : Repeat this step until i < r
STEP 5.1 : Repeat this step until j < c
STEP 5.1.1 : Read for b[i][j]
STEP 5.1.2 : j++
STEP 5.2 : i++

STEP 6 : Repeat this step until i < r
STEP 6.1 : Repeat this step until j < c
STEP 6.1.1 : mul[i][j] = 0
STEP 6.1.2 : Repeat this step until k < c
STEP 6.1.1.1 : mul[i][j] += a[i][k] * b[k][j]
STEP 6.1.1.2 : k++
STEP 6.1.2 : j++
STEP 6.2 : i++

STEP 7 : Repeat this step until i < r
STEP 7.1 : Repeat this step until j < c
STEP 7.1.1 : Print b[i][j] with tab
STEP 7.1.2 : j++
STEP 7.2 : Print "n" for line break
STEP 7.3 : i++

STEP 8 : End
```

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