### Program 126:Multiplication of 2 matrices

Program 126:

```#include<stdio.h>
main()
{
int i,j,k,rows_1,col_1,rows_2,col_2,sum=0;
printf("Enter number of rows and columns of matrix 1\n");
scanf("%d %d",&rows_1,&col_1);
printf("Enter number of rows and columns of matrix 2\n");
scanf("%d %d",&rows_2,&col_2);

int a1[rows_1][col_1],a2[rows_2][col_2],mul[rows_1][col_2];
if(col_1==rows_2)
{
//Taking input for 1st matrix
printf("Enter Matrix 1\n");
for(i=0;i<rows_1;i++)
{
for(j=0;j<col_1;j++)
{
scanf("%d",&a1[i][j]);
}
}
//Taking input for 2nd matrix
printf("Enter Matrix 2\n");
for(i=0;i<rows_2;i++)
{
for(j=0;j<col_2;j++)
{
scanf("%d",&a2[i][j]);
}
}
//multiplication of matrix
for(i=0;i<rows_1;i++)
{
for(j=0;j<col_2;j++)
{
for(k=0;k<rows_2;k++)
{
sum+=a1[i][k]*a2[k][j];
}
mul[i][j]=sum;
sum=0;
}
}

printf("Multiplication of above matrices is\n");

for(i=0;i<rows_1;i++)
{
for(j=0;j<col_2;j++)
{
printf("%d\t",mul[i][j]);
}

printf("\n");
}
}
else
{
printf("Not possible with the given rows and columns\n");
}

}```
Explanation:

//Coming Soon...

Output:

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 Compiler Used by me C-Free 5.0(Recommended) Other Compilers Code Blocks(Recommended) Online Compilers Ideone(Remember to give input before executing online where ever necessary)