Write a program that multiplies an A matrix by a real X.
The elements of matrix A will be multiplied by X.
\(X \times \begin{pmatrix} a & b & c & d \\e & f & g & h \\ i & j & k & l \end{pmatrix}= \begin{pmatrix} X \times a & X \times b & X \times c & X \times d \\X \times e & X \times f & X \times g & X \times h \\ X \times i & X \times j & X \times k & X \times l \end{pmatrix}\)
Difficulty level
Video recording
This exercise is mostly suitable for students
#include <stdio.h>
#include <conio.h>
#define SIZE 50
void main()
{
float A[SIZE][SIZE];
int R, C; /* dimensions */
int I, J;
float X;
do {
printf("Number of rows (max.%d) : ", SIZE);
scanf("%d", &R);
} while (R <= 0 || R > SIZE);
do {
printf("Number of columns (max.%d) : ", SIZE);
scanf("%d", &C);
} while (C <= 0 || C > SIZE);
for (I = 0; I<R; I++)
for (J = 0; J<C; J++)
{
printf("A[%d][%d] : ", I, J);
scanf("%f", &A[I][J]);
}
printf("Enter X : ");
scanf("%f", &X);
printf("Matrix :\n");
for (I = 0; I<R; I++)
{
for (J = 0; J<C; J++)
printf("%6.2f", A[I][J]);
printf("\n");
}
/* Mupliply A by X and assign to B */
for (I = 0; I<R; I++)
for (J = 0; J<C; J++)
A[I][J] *= X;
printf("Resultant matrix :\n");
for (I = 0; I<R; I++)
{
for (J = 0; J<C; J++)
printf("%6.2f", A[I][J]);
printf("\n");
}
getch();
}
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Modified BST