Question

Problem 3 (20 pts) It is required to write a Matrix Calculator Program using C Programming Language that could only perform addition, subtraction, and multiplication of two matrices of appropriate dimensions. Your program should prompt the user to select a matrix operation from a list of options that contains the aforementioned operations. Then, the user should be prompted to enter the dimensions of the two operand matrices. Next, your program should prompt the user to enter the elements of each matrix row-wise. Your program should perform the selected matrix operation on operand matrices and display the result on the console. Use input validation loops to make sure that the user selected a valid matrix operation and that the user entered appropriate matrix dimensions for the selected operation. Test your program by computing the following: • D= A +B, E = A -B, and F= AC Assuming that: 2.2 5.6 -8.9 -25.3 17.5 11.8 5.3 9.4 -6.7 120.1 -12.2 38.7 1.2 16.1 18.2 B 26.7 14.3 -12.5 7.2 2.5 12.3 7.9 68.2 15 , and C = 19.2 -30 -12.57 22 17 -95.2

Answer 1

#include<stdio.h>
void matrix_mul(float m1[10][10],float m2[10][10],int,int,int);
void matrix_add(float m1[10][10],float m2[10][10],int,int);
void matrix_sub(float m1[10][10],float m2[10][10],int,int);
void main()
{
float m1[10][10],m2[10][10],m3[10][10];
int i,j,k,r,c,c2,choose; //r=rows of m1,m2 c=cols of m1,m2 c=rows of m3 c2=cols of m3
printf("Enter the no.of rows and columns for matrix 1:\n");
scanf("%d%d",&r,&c);
printf("Dimensions of matrix 1: %dX%d",r,c);
printf("\nEnter the elements of the matrix 1:\n");
for(i=0;i<r;i++)
{
for(j=0;j<c;j++)
{
scanf("%f",&m1[i][j]);
}
}
//dimensions of matrix 1 and matrix 2 are equal
printf("dimensions of marix 2: %dX%d",r,c);
printf("\nEnter elements of matrix 2:\n");
for(i=0;i<r;i++)
{
for(j=0;j<c;j++)
{
scanf("%f",&m2[i][j]);
}
}
//cols of 1st matrix=rows of 3rd matrix
printf("no.of rows of matrix 3: %d",c);
printf("\nEnter the no.of columns for matrix 3:\n");
scanf("%d",&c2);
printf("Dimensions of matrix 3: %dX%d:",c,c2);
printf("\nEnter elements of matrix 3:\n");
for(i=0;i<c;i++)
{
for(j=0;j<c2;j++)
{
scanf("%f",&m3[i][j]);
}
}
printf("1.multiply\n2.addition\n3.subtraction\nEnter(1 to 3):");
scanf("%d",&choose);
if(choose==1)
   matrix_mul(m1,m3,r,c,c2);
else if(choose==2)
   matrix_add(m1,m2,r,c);
else if(choose==3)
   matrix_sub(m1,m2,r,c);
  
}

void matrix_mul(float m1[10][10],float m3[10][10],int r,int c,int c2)
{
float mul[10][10];
   int i,j,k;
for(i=0;i<r;i++)
{
for(j=0;j<c2;j++)
{
mul[i][j]=0;
for(k=0;k<c;k++)
{
mul[i][j]=mul[i][j]+m1[i][k]*m3[k][j];
}
}
}
printf("multiplication of matrix 1 and matrix 3:\n");
for(i=0;i<r;i++)
{
for(j=0;j<c2;j++)
{
printf("%f\t",mul[i][j]);
}
printf("\n");
}
}
void matrix_add(float m1[10][10],float m2[10][10],int r,int c)
{
   float add[10][10];
   int i,j;
   for (i = 0; i < r; i++)
for (j = 0; j < c; j++)
add[i][j] = m1[i][j] + m2[i][j];
printf("Addition of matrix 1 and matrix 2\n");
for(i=0;i<r;i++)
{
   for(j=0;j<c;j++)
       printf("%f\t",add[i][j]);
   printf("\n");
}  
  
}
void matrix_sub(float m1[10][10],float m2[10][10],int r,int c)
{
   float sub[10][10];
   int i,j;
   for (i = 0; i < r; i++)
for (j = 0; j < c; j++)
sub[i][j] = m1[i][j] - m2[i][j];
printf("subtraction of matrix 1 and matrix 2\n");
for(i=0;i<r;i++)
{
   for(j=0;j<c;j++)
       printf("%f\t",sub[i][j]);
   printf("\n");
}  
  
}

1 3 #include<stdio.h> 2 void matrix_mul(float m1[10][10], float m2[10][10], int, int, int); void matrix_add(float m1[10][10], float m2[10][10], int, int); 4 void matrix_sub(float m1[10][10], float m2[10][10], int, int); 5 void main() 6 { 7 float m1[10][10],m2[10][10],m3[10][10]; 8 int i, j, k,r,c,c2, choose; //r=rows of ml, m2 c-cols of m1, m2 c=rows of m3 9 printf("Enter the no. of rows and columns for matrix 1: \n"); 10 scanf("%d%d",&r,&c); 11 printf("Dimensions of matrix 1: %d/%d",r,c); 12 printf("\nEnter the elements of the matrix 1:\n"); 13 for(i=0;i<r;i++) { 15 for(j=0; j<c;j++) c2=cols of m3 14 16 { scanf("%f",&m1[i]j]); F } //dimensions of matrix 1 and matrix 2 are equal printf("dimensions of marix 2: %dX%d",r,c); printf("\nEnter elements of matrix 2: \n"); for(i=0;i<r;i++) { 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 for(j=0; j<c; j++) { scanf("%f",&m2[i][j]); } } //cols of 1st matrix=rows of 3rd matrix printf("no.of rows of matrix 3: %d", c); printf("\nEnter the no.of columns for matrix 3: \n"); scanf("%d",&c2); printf("Dimensions of matrix 3: %d/%d:", c,c2); printf("\nEnter elements of matrix 3: \n");

{ } 36 for(i=0;i<c;i++) 379 { 38 for(j=0; j<c2; j++) 39 40 scanf("%f",&m3[i][j]); 41 42 43 printf("1.multiply\n2. addition\n3. subtraction\nEnter(1 to 3):"); 44 scanf("%d",&choose); 45 if (choose==1) 46 matrix_mul(m1, m3,r,c,c2); 47 else if (choose==2) 48 matrix_add(m1, m2,r,c); 49 else if (choose==3) 50 matrix_sub(m1,m2,r,c); 51 52 L } 53 54 void matrix_mul(float m1[10][10], float m3[10][10], int r, int c, int c2) 55 Ç { 56 float mul[10][10]; int i,j,k; 58 for(i=0;i<r;i++) 59 { for(j=0; j<c2; j++) 61 62 mul[i][j]=0; 63 for(k=0;k<c;k++) 64 { 65 mul[i][j]=mul[i][j]+m1[i][k]*m3[k][j]; 66 67 } 68 57 D 60 { }

} } } 69 printf("multiplication of matrix 1 and matrix 3: \n"); 70 flor(i=0; i<r;i++) 71 { 72 for(j=0; j<c2;j++) 73 { 74 printf("%f\t", mul[i][j]); 75 76 printf("\n"); 77 78 79 void matrix_add(float m1[10][10], float m2[10][10], int r, int c) 80 { 81 float add[10][10]; 82 int i, j; 83 for (i = 0; i <r; i++) 84 for (j = 0; j <c; j++) add[i][j] = m1[i][j] + m2[i][j]; 86 printf("Addition of matrix 1 and matrix 2\n"); 87 for(i=0;i<r;i++) 88 { for(j=0; j<c; j++) 90 printf("%f\t", add[i][j]); 91 printf("\n"); 92 93 94 85 89 } }

95 void matrix_sub(float m1[10][10], float m2[10][10], int r, int c) 96 ? { 97 float sub[10][10]; 98 int i, j; 99 for (i = 0; i <r; i++) 100 for (j = 0; j <c; j++) 101 sub[i][j] = m1[i][j] - m2[i][j]; 102 printf("subtraction of matrix 1 and matrix 2\n"); 103 for(i=0;i<r;i++) 104 { 105 for(j=0; j<c;j++) 106 printf("%f\t", sub[i][j]); 107 printf("\n"); 108 109 110

C:\Users\himanth\Documents\matopera.exe Enter the no.of rows and columns for matrix 1: 43 Dimensions of matrix 1: 4x3 Enter the elements of the matrix 1: 2.2 5.6 -8.9 -25.3 17.5 11.8 5.3 9.4 -6.7 120.1 -12.2 38.7 dimensions of marix 2: 483 Enter elements of matrix 2: 1.2 26.7 14.3 16.1 -12.5 7.2 18.2 2.5 12.3 -95.2 7.9 68.2 no.of rows of matrix 3: 3 Enter the no.of columns for matrix 3: 2 Dimensions of matrix 3: 3X2: Enter elements of matrix 3: 15 -12.5 19.2 22 -30 17 1.multiply 2. addition 3. subtraction Enter(1 to 3):2 Addition of matrix 1 and matrix 2 3.400000 32.299999 5.400001 -9.199999 5.000000 19.000000 23.500000 11.900000 5.600000 24.900002 -4.300000 106.899994 Process exited after 172.2 seconds with return value 4 Press any key to continue