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Fixed Matrix Multiplication #1

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Fixed Matrix Multiplication #1

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97 changes: 53 additions & 44 deletions PPSasg.md
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Original file line number Diff line number Diff line change
Expand Up @@ -610,51 +610,60 @@ Output:
![](https://i.imgur.com/lw5xjQb.png)
### 23) Multiplication of matrices:
```C
#include<stdio.h>
void main()
{
int a[3][3],b[3][3],c[3][3],i,j,k;
int sum=0;
printf("Enter the first matrix:\n");
for(i=0;i<3;i++)
{
for(j=0;j<3;j++)
{
scanf("%d",&a[i][j]);
}
}
printf("Enter the sceond matrix:\n");
for(i=0;i<3;i++)
{
for(j=0;j<3;j++)
{
scanf("%d",&b[i][j]);
}
}
for(i=0;i<3;i++)
{
for(j=0;j<3;j++)
{
sum=0;
for(k=0;k<3;k++)
{
sum=sum+a[i][j]*b[i][j];
c[i][j]=sum;
}
}

}
printf("The multiplication of two matrices is:\n");
for(i=0;i<3;i++)
{
for(j=0;j<3;j++)
{
printf("\t%d",c[i][j]);
}
printf("\n");
}
}
/* Multiplation of matrices */

#include <stdio.h>
int main()
{
int m, n, p, q, c, d, k, sum = 0;
int first[10][10], second[10][10], multiply[10][10];

printf("Enter number of rows and columns of first matrix\n");
scanf("%d%d", &m, &n);

printf("Enter elements of first matrix\n");

for (c = 0; c < m; c++)
for (d = 0; d < n; d++)
scanf("%d", &first[c][d]);

printf("Enter number of rows and columns of second matrix\n");
scanf("%d%d", &p, &q);

if (n != p)
printf("The matrices can't be multiplied with each other.\n");

else
{
printf("Enter elements of second matrix\n");

for (c=0;c<p;c++)
for (d = 0; d < q; d++)
scanf("%d", &second[c][d]);

for (c = 0; c < m; c++) {
for (d = 0; d < q; d++) {
for (k = 0; k < p; k++) {
sum = sum + first[c][k]*second[k][d];
}

multiply[c][d] = sum;
sum = 0;
}
}

printf("Product of the matrices:\n");

for (c = 0; c < m; c++) {
for (d = 0; d < q; d++)
printf("%d\t", multiply[c][d]);

printf("\n");
}
}

return 0;
}
```
Output:
![](https://i.imgur.com/tPEZuNc.png)
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