Transpose of a 2-D matrix -- Arrays -- Data Structures and Algorithms in C

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// Transpose of a 2-D matrix. Just interchange the rows and columns.
 
#include<stdio.h>
 
struct Matrix {
 
    int rows;
    int cols;
 
    int(*set_r_c)(struct Matrix *, int, int);
 
 
};
 
int set_rows_cols(struct Matrix * inst, int rows, int cols) {
 
    inst->rows = rows; // updating the values to the struct.
    inst->cols = cols;
 
    printf("%d %d", rows, cols);
 
}; // setter function.
 
 
int transpose(struct Matrix * inst ,int mat[inst->rows][inst->cols]) {
 
    int k, l;
 
    int new_rows = inst->cols;
 
    int new_cols = inst->rows;
 
    int transposed_mat[new_rows][new_cols]; // new matrix with interchanged rows and cols
 
    for(k=0; k<new_rows; k++) {
 
        for(l=0; l<new_cols; l++) {
 
            transposed_mat[k][l] = mat[l][k];
 
        };
 
    };
 
    printf("The elements of the transposed element are: ");
 
    for(k=0; k<new_rows; k++) {
 
        for(l=0; l<new_cols; l++) {
 
            printf("%d \t", transposed_mat[k][l]);
 
        };
 
    };
 
} ;
 
 
int main() {
 
    int r, c;
 
    printf("Enter the rows and columns of the matrix: ");
    scanf("%d %d", &r, &c);
    printf("\n");
 
    int i, j, mat[r][c]; // taking a 3 by 3 matrix for reference purpose.
 
    int t_mat[c][r];
 
    printf("Enter the elements of the matrix \n");
    for(i=0; i<r; i++) {
 
        for(j=0; j<c; j++) {
 
            scanf("%d", &mat[i][j]);
            printf("\n");
 
        };
 
    };
 
    struct Matrix m;
 
    m.set_r_c = set_rows_cols;
 
 
    m.set_r_c(&m, r, c);
 
  
}

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