Question

1. Write a single C statement to accomplish each of the following tasks:
   1. Assign the sum of x and y to z and decrement the value of y by 1 after the calculation.
   2. Multiply num by 3 using the *= operator.
   3. Increment variable x by 1, then subtract it from variable value.
   4. Add variable x to variable total, then increment x by 1.

Answer 1

Here is the solution to above problem, All required information is in the comments

CODE IN C

#include <stdio.h>

int main() {
  
   int z;
   int x=10;
   int y=12;
   //ANSWER TO PART A
   z=x+y--;
   //JUST PRINTING THE ANSWER NOT REQUIRED FOR ANSWER
   printf("Z: %d Y:%d\n",z,y);
   int num=5;
   //ANSWER TO PART B
   num*=3;
   //JUST PRINTING THE ANSWER NOT REQUIRED FOR ANSWER
   printf("num: %d\n",num);
   //ANSWER TO PART C
   int value=20;
   value-=(++x);
   //JUST PRINTING THE ANSWER NOT REQUIRED FOR ANSWER
   printf("Value: %d\n",x);
   int total=10;
   //ANSWER TO PART D
   total+=(x++);
   //JUST PRINTING THE ANSWER NOT REQUIRED FOR ANSWER
   printf("TOTAL: %d X: %d\n",total,x);
   return 0;
}

OUTPUT

SCREENSHOT OF CODE