Question

1. How a program get compiled and executed on computer? [4 marks] 2. What do you understand by variable in programming? [4 marks] 3. Using "if...else if...else if.else.." how you can compute the grade of a student? [6 marks] 4. How do you find the greatest number from given four numbers using "if...else if...else if... else.."? [6 marks] 5. Explain the execution of loop with an appropriate example. [5 marks]

Answer 1

1)If a language is a compiled language,it should run through a compiler. The compiler the converts the high-level to machine level language.After compilation of a program,compiler creates object file. This object codes contains the machine instructions. object is not an executable file. So,it processed with linker. after this we got an executable file.

2)A variable is a value that can change  depending on the  instructions of a program.

3) if (total>=70)

{ printf("grade A");}

else if (total>=60 and total<70)

{ printf("grade B"); }

else if (total>=50 and total<60)

{ printf("grade c") }

else

{printf("fail");}

4)if(num1>num2)

{

if(num1>num3)

{

if(num1>num4)

{

printf("num1 is greater");

}

else

{

printf("num4 is greater");

}

}

else if(num1<num3)

{

if(num3>num4)

{

printf("num3 is greater");

}

else

{

printf("num4 is greater");

}

}

)

else if(num2>num3)

{

if(num2>num4)

{

printf("num2 is greater");

}

else

{

printf("num4 is greater");

}

}

else if(num 3>num4)

{

printf("num3 is greater");

}

else

{

printf("num4 is greater");

}