matrix problems

Sort the corner element in clockwise

Example:

Input

3 3

9 2 7

4 5 6

1 8 3

Output:

1 2 3

4 5 6

9 8 7

#include<stdio.h>

#include <stdlib.h>

int main()

int r,c;

scanf("%d %d\n",&r,&c);

int mat[r][c];

for(int row=0;row<r;row++)

    for(int col=0;col<c;col++)

        scanf("%d ",&mat[row][col]);

int sort[]={mat[0][0],mat[0][c-1],mat[r-1][c-1],mat[r-1][0]};

for(int i=0;i<4;i++)

    for(int j=i+1;j<4;j++)

        if(sort[i]>sort[j])

            int temp=sort[i];

            sort[i]=sort[j];

            sort[j]=temp;

mat[0][0]=sort[0];

mat[0][c-1]=sort[1];

mat[r-1][c-1]=sort[2];

mat[r-1][0]=sort[3];

for(int row=0;row<r;row++)

    for(int col=0;col<c;col++)

        printf("%d ",mat[row][col]);

    printf("\n");

Example:

Input

4 5

80 50 45 86 20

48 57 10 44 30

22 47 58 44 27

74 36 84 40 99

Output:

80 50 20 86 45

48 57 30 44 10

22 47 27 44 58

74 36 99 40 84

#include<stdio.h>

int main()

    int r,c;

    scanf("%d %d",&r,&c);

    int arr[r+1][c+1];

    for(int row=1;row<=r;row++)

        for(int col=1;col<=c;col++)

            scanf("%d",&arr[row][col]);

    for(int row=1;row<=r;row++)

    {   int k=0,ctr=c;

        for(int col=1;col<=c;col++)

            if(k==0)

                printf("%d ",arr[row][col]);

            else

                printf("%d ",arr[row][ctr--]);

            if(c/col==2)

                k=1;

        printf("\n");