Below is the program to find maximum number in each column in a given matrix
#include <stdio.h>
int main(){
int r,c;
printf("Enter number of rows: ");
scanf("%d",&r);
printf("Enter number of columns: ");
scanf("%d",&c);
int arr[r][c];
printf("Enter elements of a matrix\n");
int i=0,j;
for(i=0;i<r;i++){
for(j=0;j<c;j++){
printf("Enter a%d%d: ",i+1,j+1);
scanf("%d",&arr[i][j]);
}
}
printf("Elements in the matrix are:\n");
for(i=0;i<r;i++){
for(j=0;j<c;j++){
printf("%d\t\t",arr[i][j]);
}
printf("\n\n");
}
int matrix[c],max_num=0;
i=0;
while(i<c){
for(j=0;j<r;j++){
if(arr[j][i]>max_num){
max_num=arr[j][i];
}
}
matrix[i]=max_num;
max_num=0;
i++;
}
for(i=0;i<c;i++){
printf("Largest number in column %d is %d\n",i,matrix[i]);
}
}Output:
Enter number of rows: 3
Enter number of columns: 3
Enter elements of a matrix
Enter a11: 5
Enter a12: 2
Enter a13: 7
Enter a21: 8
Enter a22: 1
Enter a23: 9
Enter a31: 4
Enter a32: 7
Enter a33: 3
Elements in the matrix are:
5 2 7
8 1 9
4 7 3
Largest number in column 0 is 8
Largest number in column 1 is 7
Largest number in column 2 is 9
