if x3 and y7 what does the following output if nothing say n

if x=3 and y=7 what does the following output? (if nothing say nothing)

1.) printf(\"x=\");

2.)printf(\"%d==%d\",y,x);

3.)scanf (\"%d\",&y);

4.)printf (\"\ %d%d\",y+x+x+x);

5.)printf(\"%d\",x);

Solution

if x=3 and y=7
1.) printf(\"x=\");
   Output: x=

2.)printf(\"%d==%d\",y,x);
   Output: 7==3

3.)scanf(\"%d\",&y);
   Output: nothing

4.)printf (\"\ %d%d\",y+x+x+x);
   Error: more \'%\' conversions than data arguments

5.)printf(\"%d\",x);
   Output: 3