This is a C program to find the largest and second largest element of all the rows and columns of a matrix. If you have any doubts, please feel free in asking.
#include<stdio.h>
main()
{
int a[50][50],size,n,m,i,j,large,slarge;
printf("enter size of matrix(row and column):");
scanf("%d %d",&n,&m);
printf("\n enter the elements:");
for(i=0;i<n;i++)
{
for(j=0;j<m;j++)
scanf("%d",&a[i][j]);
}
printf("\n the inputed matrix is:\n");
for(i=0;i<n;i++)
{
for(j=0;j<m;j++)
printf("\t%d ",a[i][j]);
printf("\n");
}
for(i=0;i<n;i++)
{
slarge=a[i][0];
large=a[i][0];
for(j=0;j<m;j++)
{
if(large<a[i][j])
large=a[i][j];
}
printf("\n the largest of row%d is %d",i+1,large);
for(j=0;j<m;j++)
{
if(a[i][j]!=large)
{
if(slarge<a[i][j])
slarge=a[i][j];
}
}
printf("\nthe seceond largest of row%d is %d",i+1,slarge);
}
for(j=0;j<m;j++)
{
slarge=a[0][j];
large=a[0][j];
for(i=0;i<n;i++)
{
if(large<a[i][j])
large=a[i][j];
}
printf("\n the largest of column %dis %d",j+1,large);
for(i=0;i<n;i++)
{
if(a[i][j]!=large)
{
if(slarge<a[i][j])
slarge=a[i][j];
}
}
printf("\nthe second largest of column %dis %d\n",j+1,slarge);
}
}
