Passing array unsigned in a function recursion in C











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How do I use array as argument in recursion?



The procedure



void divide(int arr, int i, int j, int max, int min){
//Deklarasi
int min1, min2, max1, max2, k;//Algoritma
//1 Elemen
if(i == j){
min = arr[i];
max = arr[i];
}
else{
//2 Elemen
if(i == j-1){
if (arr[i] > arr[j]){
max = arr[i];
min = arr[j];
}
else{
max = arr[j];
min = arr[i];
}
}
//>2 Elemen
else{
k = (i+j)/2;
divide(arr[j],i,k,max1,min1);
divide(arr[j],k+1,j,max2,min2);
min = (min1>min2) ? (min2) : (min1);
max = (max1>max2) ? (max1) : (max2);
}
}
}


The main



int main(){
int i,j,min,max,x;
i = 1;
scanf("%d",&j);

//Input the array
int arr[j];
for(x=0;x<j;x++){
scanf("%d",&arr[x]);
}
divide(arr[j],i,j,max,min);
printf("%d %d", min, max);
}


when I execute the code, I can input the size and the array, but the program can't run(error)



Please help me, how do I pass array in a function?










share|improve this question




























    up vote
    -1
    down vote

    favorite












    How do I use array as argument in recursion?



    The procedure



    void divide(int arr, int i, int j, int max, int min){
    //Deklarasi
    int min1, min2, max1, max2, k;//Algoritma
    //1 Elemen
    if(i == j){
    min = arr[i];
    max = arr[i];
    }
    else{
    //2 Elemen
    if(i == j-1){
    if (arr[i] > arr[j]){
    max = arr[i];
    min = arr[j];
    }
    else{
    max = arr[j];
    min = arr[i];
    }
    }
    //>2 Elemen
    else{
    k = (i+j)/2;
    divide(arr[j],i,k,max1,min1);
    divide(arr[j],k+1,j,max2,min2);
    min = (min1>min2) ? (min2) : (min1);
    max = (max1>max2) ? (max1) : (max2);
    }
    }
    }


    The main



    int main(){
    int i,j,min,max,x;
    i = 1;
    scanf("%d",&j);

    //Input the array
    int arr[j];
    for(x=0;x<j;x++){
    scanf("%d",&arr[x]);
    }
    divide(arr[j],i,j,max,min);
    printf("%d %d", min, max);
    }


    when I execute the code, I can input the size and the array, but the program can't run(error)



    Please help me, how do I pass array in a function?










    share|improve this question


























      up vote
      -1
      down vote

      favorite









      up vote
      -1
      down vote

      favorite











      How do I use array as argument in recursion?



      The procedure



      void divide(int arr, int i, int j, int max, int min){
      //Deklarasi
      int min1, min2, max1, max2, k;//Algoritma
      //1 Elemen
      if(i == j){
      min = arr[i];
      max = arr[i];
      }
      else{
      //2 Elemen
      if(i == j-1){
      if (arr[i] > arr[j]){
      max = arr[i];
      min = arr[j];
      }
      else{
      max = arr[j];
      min = arr[i];
      }
      }
      //>2 Elemen
      else{
      k = (i+j)/2;
      divide(arr[j],i,k,max1,min1);
      divide(arr[j],k+1,j,max2,min2);
      min = (min1>min2) ? (min2) : (min1);
      max = (max1>max2) ? (max1) : (max2);
      }
      }
      }


      The main



      int main(){
      int i,j,min,max,x;
      i = 1;
      scanf("%d",&j);

      //Input the array
      int arr[j];
      for(x=0;x<j;x++){
      scanf("%d",&arr[x]);
      }
      divide(arr[j],i,j,max,min);
      printf("%d %d", min, max);
      }


      when I execute the code, I can input the size and the array, but the program can't run(error)



      Please help me, how do I pass array in a function?










      share|improve this question















      How do I use array as argument in recursion?



      The procedure



      void divide(int arr, int i, int j, int max, int min){
      //Deklarasi
      int min1, min2, max1, max2, k;//Algoritma
      //1 Elemen
      if(i == j){
      min = arr[i];
      max = arr[i];
      }
      else{
      //2 Elemen
      if(i == j-1){
      if (arr[i] > arr[j]){
      max = arr[i];
      min = arr[j];
      }
      else{
      max = arr[j];
      min = arr[i];
      }
      }
      //>2 Elemen
      else{
      k = (i+j)/2;
      divide(arr[j],i,k,max1,min1);
      divide(arr[j],k+1,j,max2,min2);
      min = (min1>min2) ? (min2) : (min1);
      max = (max1>max2) ? (max1) : (max2);
      }
      }
      }


      The main



      int main(){
      int i,j,min,max,x;
      i = 1;
      scanf("%d",&j);

      //Input the array
      int arr[j];
      for(x=0;x<j;x++){
      scanf("%d",&arr[x]);
      }
      divide(arr[j],i,j,max,min);
      printf("%d %d", min, max);
      }


      when I execute the code, I can input the size and the array, but the program can't run(error)



      Please help me, how do I pass array in a function?







      c






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      edited Nov 20 at 2:01

























      asked Nov 20 at 1:29









      Ananda Vj

      84




      84
























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          When you call divide, you need to pass arr, not arr[j]. arr[j] is just a single element of the array. Also you may want to pass in your min and max as pointers so that you actually get the new values in your main function.






          share|improve this answer





















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            1 Answer
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            1 Answer
            1






            active

            oldest

            votes









            active

            oldest

            votes






            active

            oldest

            votes








            up vote
            1
            down vote



            accepted










            When you call divide, you need to pass arr, not arr[j]. arr[j] is just a single element of the array. Also you may want to pass in your min and max as pointers so that you actually get the new values in your main function.






            share|improve this answer

























              up vote
              1
              down vote



              accepted










              When you call divide, you need to pass arr, not arr[j]. arr[j] is just a single element of the array. Also you may want to pass in your min and max as pointers so that you actually get the new values in your main function.






              share|improve this answer























                up vote
                1
                down vote



                accepted







                up vote
                1
                down vote



                accepted






                When you call divide, you need to pass arr, not arr[j]. arr[j] is just a single element of the array. Also you may want to pass in your min and max as pointers so that you actually get the new values in your main function.






                share|improve this answer












                When you call divide, you need to pass arr, not arr[j]. arr[j] is just a single element of the array. Also you may want to pass in your min and max as pointers so that you actually get the new values in your main function.







                share|improve this answer












                share|improve this answer



                share|improve this answer










                answered Nov 20 at 1:37









                ahota

                34628




                34628






























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