Write C Program to Add Two Matrices


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Introduction

I have used CodeBlocks compiler for debugging purpose. But you can use any C programming language compiler as per your availability.


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#include <stdio.h>
int main(){
    int r, c, a[100][100], b[100][100], sum[100][100], i, j;

        printf("Enter number of rows (between 1 and 100): ");
        scanf("%d", &r);
        printf("Enter number of columns (between 1 and 100): ");
        scanf("%d", &c);

        printf("\nEnter elements of First matrix:\n");

        for(i=0; i<r; ++i)
        for(j=0; j<c; ++j)
        {
            printf("Enter element a%d%d: ",i+1,j+1);
            scanf("%d",&a[i][j]);
        }

        printf("Enter elements of Second matrix:\n");
        for(i=0; i<r; ++i)
        for(j=0; j<c; ++j)
        {
            printf("Enter element a%d%d: ",i+1, j+1);
            scanf("%d", &b[i][j]);
        }

        // Adding Two matrices

        for(i=0;i<r;++i)
        for(j=0;j<c;++j)
        {
            sum[i][j]=a[i][j]+b[i][j];
        }

        // Displaying the result
        printf("\nSum of two matrix is: \n\n");

        for(i=0;i<r;++i)
        for(j=0;j<c;++j)
        {

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

            if(j==c-1)
            {
                printf("\n\n");
            }
        }

    return 0;
}

Result

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