// Online C compiler to run C program online
#include <stdio.h>
int add(int matrixA, int matrixB); 
int sub(int matrixA, int matrixB); 
int product(int matrixA, int matrixB); 
int trans(int matrixA, int matrixB);
int main() {
    int matA [3] [3]; 
    //taking input from user 
    printf("Enter values for a matrix A(3x3) :\n"); 
    for (int i = 0; i < 3 ; i++) { 
        for(int j = 0 ; j < 3 ; j++) { 
            printf("row %d and column %d: ", i + 1 , j+1); 
            scanf("%d", &matA[i][j]); 
        }
    }
    int matB [3] [3]; 
    printf("\nEnter values for matrix B(3x3) :\n"); 
    for (int i = 0 ; i < 3 ; i++) { 
        for(int j = 0 ; j<3; j++) {
            printf("row %d and column %d: ", i+1, j+1); 
            scanf("%d", &matB[i][j]);
        }
    }
    printf("Select operation to perform on above matrices:\n1. Addition\n2. Subtraction\n3. Multiplication\n4. Transpose of A or B");
    int ch;
    scanf("%d", &ch);
    switch(ch){
    case 1: add(matA[3][3], matB[3][3]); 
            break;
    case 2: sub(matA[3][3], matB[3][3]); 
            break;
    case 3: product(matA[3][3], matB[3][3]); 
            break;
    case 4: trans(matA[3][3], matB[3][3]); 
            break;
    default: printf("This is not a valid operation!");
    }
    return 0;
}
int add(int matrixA, int matrixB){
    int sum[3][3];
    printf("The sum of matrix A and B is: \n");
    for(int i=0; i<3; i++){
        for(int j=0; j<3; j++){
            sum[i][j] = matrixA[i][j] + matrixB[i][j];
            printf("%d      ", sum[i][j]);
        }
        printf("\n");
    }
}
int sub(int matrixA, int matrixB){
    int sub[3][3];
    printf("The diffrence of matrices A and B (A-B) is: \n");
    for(int i=0; i<3; i++){
        for(int j=0; j<3; j++){
            sub[i][j] = matrixA[i][j] - matrixB[i][j];
            printf("%d      ", sub[i][j]);
        }
        printf("\n");
    }
}
int product(int matrixA, int matrixB){
    int multi[3][3];
    printf("The product of matrix A and B is: \n");
    for(int i=0; i<3; i++){
        for(int j=0; j<3; j++){
            for(int k=0; k<3; k++){
                multi[i][j] = matrixA[i][j] * matrixB[j][k];
                printf("%d      ", multi[i][j]);
            }
        }
        printf("\n");
   }
}
int trans(int matrixA, int matrixB){
    printf("Transpose of matrix A: \n");
    int temp1 = matrixA;
    for(int i=0; i<3; i++){
        for(int j=0; j<3; j++){
            matrixA[i][j]=temp1[j][i];
            printf("%d      ", matrixA[i][j]);
        }
        printf("\n");
    }
    printf("Transpose of matrix B: \n");
    int temp2 = matrixB;
    for(int i=0; i<3; i++){
        for(int j=0; j<3; j++){
            matrixB[i][j]=temp2[j][i];
            printf("%d      ", matrixB[i][j]);
        }
        printf("\n");
    }
}

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