#include < stdio.h >
int main(){
int r, c, a[100][100], b[100][100], Lsum,Dsum,Usum , i, j;
printf("Enter number of rows (between 1 and 100): ");
scanf("%d", &r);
printf("Enter number of columns (between 1 and 100): ");
scanf("%d", &c);
printf("\nEnter elements of 1st matrix:\n");
for(i=0; i< r; ++i)
for(j=0; j< c; ++j)
{
printf("Enter element a%d%d: ",i+1,j+1);
scanf("%d",&a[i][j]);
}
printf("Enter elements of 2nd matrix:\n");
for(i=0; i< r; ++i)
for(j=0; j< c; ++j)
{
printf("Enter element a%d%d: ",i+1, j+1);
scanf("%d", &b[i][j]);
}
// Adding Two matrices
for(i=0;i< r;++i)
for(j=0;j< c;++j)
{
if (i < j)
Usum =Usum+a[i][j]+b[i][j];
if (i > j)
Lsum =Lsum+a[i][j]+b[i][j];
if (i > j)
Dsum =Dsum+a[i][j]+b[i][j];
}
// Displaying the result
printf("\nSum of upper triangle of matrix is: \n\n");
printf("sum= %d ",sum );
return 0;
}