C Program to Multiply Two Matrix

 

#include <stdio.h>

#include<stdlib.h>

#include<string.h>

int main (){


// Initialising 1st Matrix

system("clear");

int m1,n1,m2,n2;

printf("No of Rows of 1st Matrix : ");

scanf("%d",&m1);

printf("No of Columns of 1st Matrix : ");

scanf("%d",&n1);

// Initialising the 2nd Matrix

printf("No of Rows of 2nd Matrix : ");

scanf("%d",&m2);

printf("No of Columns of 2nd Matrix : ");

scanf("%d",&n2);

if (n1!=m2)

{

printf("Can't Compute ...\n");

// Checking n1=m2

}

else{

int matrix1[m1][n1];

int matrix2[m2][n2];

// Taking input of 1st Matrix

printf("\n ");

printf("Enter the 1st Matrix : \n\n");

for (int i=1;i<=m1;i++)

{

for (int j=1;j<=n1;j++)

{

printf("\ta[%d][%d] : ",i,j);

scanf("%d",&matrix1[i][j]);

}

}

// Taking input of 2nd Matrix


printf("\n ");

printf("Enter the 2nd Matrix : \n\n");

for (int i=1;i<=m2;i++)

{

for (int j=1;j<=n2;j++)

{

printf("\tb[%d][%d]",i,j);

scanf("%d",&matrix2[i][j]);

}

}

printf("\n");

// Printing 1st Matrix


for (int i=1;i<=m1;i++)

{

printf("\t");

printf("|");

for (int j=1;j<=n1;j++)

{

printf(" %d ",matrix1[i][j]);

}

printf("|");

printf("\n");

}

printf("\n\n");

// Printing 2nd Matrix


for (int i=1;i<=m2;i++)

{

printf("\t");

printf("|");

for (int j=1;j<=n2;j++)

{

printf(" %d ",matrix2[i][j]);

}

printf("|");

printf("\n");

}

int x=1,y=1,sum[m1][n2];

int product[x][y];

for (int k=1;k<=m1;k++)

{

for (int p=1;p<=n2;p++)

{

// product[k][p]=matrix1[k][p]*matrix2[p][k];

//um=sum+product[k][p];

// printf("%d",sum);

product[k][p]=matrix1[k][p]*matrix2[p][k];

sum[k][p]=sum[k][p]+product[k][p];

printf("%d\n",sum[k][p]);

}

}


} // Closing of else Statement

}





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