# C Program to find Matrix addition,Subtraction and trace.

Write a C program to read two matrices A (MxN) and B(MxN) and perform addition ,subtraction of A and B, and Find the trace of the resultant matrix. Output the given matrix, their sum or Differences and the trace. Read more about C Programming Language .

`/************************************************************ You can use all the programs on  www.c-program-example.com* for personal and learning purposes. For permissions to use the* programs for commercial purposes,* contact [email protected]* To find more C programs, do visit www.c-program-example.com* and browse!* *                                  Happy Coding***********************************************************/#include <stdio.h>#include <conio.h>void main(){ int A[10][10], B[10][10], sumat[10][10], diffmat[10][10]; int i, j, M,N, option; void trace (int arr[][10], int M, int N); clrscr(); printf("Enter the order of the matrice A and Bn"); scanf("%d %d", &M, &N); printf("Enter the elements of matrix An"); for(i=0; i<M; i++) {  for(j=0; j<N; j++)  {   scanf("%d",&A[i][j]);  } } printf("MATRIX A isn"); for(i=0; i<M; i++) {  for(j=0; j<N; j++)  {   printf("%3d",A[i][j]);  }  printf("n"); } printf("Enter the elements of matrix Bn"); for(i=0; i<M; i++) {  for(j=0; j<N; j++)  {   scanf("%d",&B[i][j]);  } } printf("MATRIX B isn"); for(i=0; i<M; i++) {  for(j=0; j<N; j++)  {   printf("%3d",B[i][j]);  }  printf("n"); } printf("Enter your option: 1 for Addition and 2 for Subtractionn"); scanf("%d",&option); switch (option) { case 1: for(i=0; i<M; i++) {  for(j=0; j<N; j++)  {   sumat[i][j] = A[i][j] + B[i][j];  } } printf("Sum matrix isn"); for(i=0; i<M; i++) {  for(j=0; j<N; j++)  {   printf("%3d",sumat[i][j]) ;  }  printf("n"); } trace (sumat, M, N); break; case 2:for(i=0; i<M; i++) {  for(j=0; j<N; j++)  {   diffmat[i][j] = A[i][j] - B[i][j];  } } printf("Difference matrix isn"); for(i=0; i<M; i++) {  for(j=0; j<N; j++)  {   printf("%3d",diffmat[i][j]) ;  }  printf("n"); } trace (diffmat, M, N); break; }}    /* End of main() *//*Function to find the trace of a given matrix and print it*/void trace (int arr[][10], int M, int N){ int i, j, trace = 0; for(i=0; i<M; i++) {  for(j=0; j<N; j++)  {   if (i==j)   {    trace = trace + arr[i][j];   }  } } printf ("Trace of the resultant matrix is = %dn", trace);}`
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