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  1. //Q80. multiply two matrices
  2. #include <stdio.h>
  3. int main() {
  4.     int r1,c1,r2,c2,a[10][10],b[10][10],m[10][10]={0};
  5.     scanf("%d%d",&r1,&c1);
  6.     for(int i=0;i<r1;i++)
  7.         for(int j=0;j<c1;j++)
  8.             scanf("%d",&a[i][j]);
  9.     scanf("%d%d",&r2,&c2);
  10.     for(int i=0;i<r2;i++)
  11.         for(int j=0;j<c2;j++)
  12.             scanf("%d",&b[i][j]);
  13.  
  14.     if(c1!=r2){ 
  15.         printf("Multiplication not possible");
  16.         return 0;
  17.     }
  18.  
  19.     for(int i=0;i<r1;i++)
  20.         for(int j=0;j<c2;j++)
  21.             for(int k=0;k<c1;k++)
  22.                 m[i][j]+=a[i][k]*b[k][j];
  23.  
  24.     for(int i=0;i<r1;i++){
  25.         for(int j=0;j<c2;j++)
  26.             printf("%d ",m[i][j]);
  27.         printf("\n");
  28.     }
  29. }
  30.  
Success #stdin #stdout 0.01s 5324KB
comments (?)
stdin
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2 3
1 2 3
4 5 6
3 2
7 8
9 10
11 12
stdout
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58 64 
139 154
https://ideone.com/5XnLAh
language:
C (gcc 8.3)
created:
21 hours ago
visibility:
public

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