Answer / senthil.k,arasur

void main()
{
int a,b,c;
cout<<"Diagonal matrix";
for(a=1;a<=3;a++)
{
for(b=1;b<=3;b++)
{
c=1;
if(c==b)
{
cout<<c;
}
else
{
cout<<"0";
}
}
c++;
cout<<"\n";
}
}
output:

1 0 0
0 2 0
0 0 3

Answer / md.ekramul kabir

#include<stdio.h>


void main(void)
{
int row=0,column=0;

int data[4][4];

for(row=0;row<=3;row++)
{

for(column=0;column<=3;column++)
{

scanf("%d",&data[row][column]);
}
}



printf("\nYour Matrix is : \n");


for(row=0;row<=3;row++)
{

for(column=0;column<=3;column++)
{

printf("%d\t",data[row][column]);
}

printf("\n");
}

}

You attempt to query the data base with this command: SELECT name, salary FROM employee WHERE salary=(SELECT salary FROM employee WHERE last name='Wagner' OR dept no=233) Choose most appropriate option from the following: 1)Sub-queries are not allowed in the where clause. 2)a multiple row sub-query used with a single row comparison operator. 3)a single row query is used with a multiple row comparison operator.

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