How to swap fragment in viewpager?

In the swap function how do i swap x and y value? Is there an easier way to write this program?

• My values in the swap function did not return could someone help me out? #include<stdio.h> #include<math.h> double swap(double*); int main (void) { char character; int num1; double num2; double y; double x = swap(&y); printf("Enter a character...\n"); scanf("%c",&character); printf("Enter an integer...\n"); scanf("%d",&num1); printf("Enter a real number...\n"); scanf("%lf",&num2); printf("char = %c at memory location : Ox%p\n",character, &character); printf("char = %d at memory location : Ox%p\n",num1, &num1); printf("char = %lf at memory location : Ox%p\n",num2, &num2); printf("%lf %lf",x,y); return 0; } double swap(double*y) { double x = 5; double y = 10; double xx; double yy; xx = x; yy = y; x = yy; y = xx; return x; }

• Answer:

  Adding to the above comment, try this edited code, maybe it will point you in the right direction (sample run): http://codepad.org/rjwrpp9R __ #include<stdio.h> #include<math.h> double swap(double*); int main (void) { char character='p'; int num1=8; double num2=7.4; double y=9.9; double x = swap(&y); printf("Enter a character...\n"); scanf("%c",&character); printf("Enter an integer...\n"); scanf("%d",&num1); printf("Enter a real number...\n"); scanf("%lf",&num2); printf("char = %c at memory location : Ox%p\n",character, &character); printf("char = %d at memory location : Ox%p\n",num1, &num1); printf("char = %lf at memory location : Ox%p\n",num2, &num2); printf("%lf %lf",x,y); return 0; } double swap(double*y) { double x = 5; double *xx; double *yy; xx = &x; yy = y; x = *xx; y = xx; return x; }