Using C Language

I want to move temp variables (tempa, tempb, tempc, tempd) back into the original pointers at the bottom of my code..insert code after line 25

My code below

1 #include 2 3. uint32_t rot132(uint32_t x, int n) { 4 return (x n) | (x >> (32-n)); 5} 6 7- void mixing(uint32_t *a, uint32_t *b, uint32_t *c, uint32_t *d) { 8 uint32_t tempa *a; 9 uint32_t tempb = *b; 10 uint32_t tempc = c; 11 uint32_t tempd = *d; 12 13 tempa = tempa + tempb; //1 14 tempd = tempd ^ tempa; 1/2 15 tempd rot132(tempd, 16); //3, assigned to d since rot132 doesn't call-by-reference 16 tempc = tempc + tempd; 1/4 17 tempb = tempb^ tempc; //5 18 tempb = rot132(tempb, 12); //6 19 tempa = tempa + tempb; 1/7 20 tempd = tempd^ tempa; //8 21 tempd rot132(tempd, 8); //9 22 tempc = tempc + tempd; 7/10 23 tempb = tempb^ tempc; //11 24 tempb = rot132(tempb, 7); 25 26 27 28 } 29 1 #include 2 3. uint32_t rot132(uint32_t x, int n) { 4 return (x n) | (x >> (32-n)); 5} 6 7- void mixing(uint32_t *a, uint32_t *b, uint32_t *c, uint32_t *d) { 8 uint32_t tempa *a; 9 uint32_t tempb = *b; 10 uint32_t tempc = c; 11 uint32_t tempd = *d; 12 13 tempa = tempa + tempb; //1 14 tempd = tempd ^ tempa; 1/2 15 tempd rot132(tempd, 16); //3, assigned to d since rot132 doesn't call-by-reference 16 tempc = tempc + tempd; 1/4 17 tempb = tempb^ tempc; //5 18 tempb = rot132(tempb, 12); //6 19 tempa = tempa + tempb; 1/7 20 tempd = tempd^ tempa; //8 21 tempd rot132(tempd, 8); //9 22 tempc = tempc + tempd; 7/10 23 tempb = tempb^ tempc; //11 24 tempb = rot132(tempb, 7); 25 26 27 28 } 29