What is the output of the following program

Note: At First, Solve this Programme Without Using Computer (Use manual tracing for better coding). Then run it in your Computer to Check your Answer.

(a)

     #include <stdio.h>

      int main()
      {
        int x=10,y=20, z=5;
        y = ++x;
        x += 12;
        y = x++;
        x *= 2;
        z = ++y;
        printf("%d %d %d”,x,y,z);

      return 0;
     }

b)
     #include <stdio.h>

      int main(void) {

      int i,j,k,p=0;
      for(i=0,j=1;i<=3;i++,j+=3)
      {
           k=j+j*i;
           p=p+k;
      }
      printf("\nValue is=%d",p);

    return 0;
    }


c)
   #include <stdio.h>

    int main(void) {

    int i,j,p,q=0,r;
    for(i=0,j=1;i<3;i++,j+=2)
    {
      p = j*j+i;
      q = p+q+1;
      r = 2*p - q -10;
      printf (“\n %d %d %d”,p,q,r);
    }
    printf("\nSummation =%d",p+q+r);

    return 0;
    }

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