Section C: C Program: 1: Write a code to add, subtract, mulitiply and divide two numbers. #include<stdio.h> #include<conio.h> void main() {           int num1, num2;           clrscr();           printf("Enter First number : ");           scanf("%d",&num1);           printf("\nEnter Second number : ");           scanf("%d",&num2);           printf("\n%d + %d = %d", num1, num2, (num1 + num2));           printf("\n%d - %d = %d", num1, num2, (num1 - num2));           printf("\n%d * %d = %d", num1, num2, (num1 * num2));   ...