To input a square matrix and calculate sum of

To input a square matrix and calculate sum of

1. Diagonal element

2. Lower triangular elements

3. Upper triangular elements



#include

#include



main()

{

int a[5][5],i,j,m,n,s=0,sl=0,su=0;

clrscr();

printf("Input array size ");

scanf("%d%d",&m,&n);

if(m==n)

{

printf("\nInput %d elements ",m*n);

for(i=0;ifor(j=0;jscanf("%d",&a[i][j]);

clrscr();

printf("\nEntered array is \n");

for(i=0;i{

for(j=0;j{

printf("%d",&a[i][j]);

if(i==j)

s=s+a[i][j];

if(isu=su+a[i][j];

if(i>j)

sl=sl+a[i][j];

}

printf("\n");

}

printf("\nSum of diagonal elements = %d",s);

printf("\nSum of upper triangular matrix is %d",su);

printf("\nsum of lower triangular matrix is %d",sl);

}

else 

printf("\nWrong dimensions, not a square array ...");

}