我写了一个函数,可以在c中切片数组,但是它返回我认为的地址。我曾经正确地工作过一次,但在某个地方搞砸了,任何帮助将不胜感激。
#include <stdio.h>
#include <stdlib.h>
int slice_array(int *input_array, int *sliced_array, int n){
int i;
for(i=0; i < n; i++) {
sliced_array[i] = input_array[i];
return 0;
}
};
struct nbrs_ind {
float value;
int index;
};
//I also want to write a function which can slice the members of struct nbrs_ind (i.e. just slice first n indices nbrs_ind)
int main () {
int k=4;
int i;
int a[7] = {1,2,3,4,6,5,7};
int *ptr_a = a;
int b[k];
int *ptr_b = b;
slice_array(a,b,k);
for(i=0;i<k;i++) {
printf("%d\t",b[i]);
}
printf("\n");
}
〜
更新,切片数组工作正常,但到目前为止,我想与struct相同,我已经编写了以下代码。我得到他以下错误:
来自不兼容的指针类型的分配[默认启用]
ptr_A =&A;
#include <stdio.h>
#include <stdlib.h>
//This function works fine in drivers program
void slice_array(int *input_array, int *sliced_array, int n){
int i;
for(i=0; i < n; i++) {
sliced_array[i] = input_array[i];
}
};
struct nbrs_ind {
float value;
int index;
};
//Need to make the slice of nbrs_ind struct using following function.
void slice_struct(struct nbrs_ind *input_struct, struct nbrs_ind *sliced_struct, int n){
int i;
for(i=0; i < n; i++) {
sliced_struct[i].index = input_struct[i].index;
sliced_struct[i].value = input_struct[i].value;
}
};
int main () {
int k=3;
int i;
int a[7] = {1,2,3,4,6,5,7};
float c[7] = {2.3,10,3,5,6.4,7.3,1};
int *ptr_a = a;
int b[k];
int *ptr_b = b;
struct nbrs_ind A[7]; // Declare 7 struct of nbrs_ind
//Initilize the delare structs
for (i=0;i<7;i++){
A[i].index = i;
A[i].value = c[i];
}
//How do I make a pointer to the struct so I can pass it to slice_struct function
// I need to be able to do something like slice_struct(A,B,n);
struct nbrs_ind *ptr_A ;
ptr_A = &A;
slice_array(a,b,k);
for(i=0;i<k;i++) {
printf("%d\t",b[i]);
}
printf("\n");
}
〜
〜
〜
答案 0 :(得分:0)
#include <stdio.h>
#include <stdlib.h>
int slice_array(int *input_array, int *sliced_array, int n){
int i;
for(i=0; i < n; i++) {
sliced_array[i] = input_array[i];
}
return 0;
};
struct nbrs_ind {
float value;
int index;
};
//I also want to write a function which can slice the members of struct nbrs_ind (i.e. just slice first n indices nbrs_ind)
int main () {
int k=4;
int i;
int a[7] = {1,2,3,4,6,5,7};
int *ptr_a = a;
int b[k];
int *ptr_b = b;
slice_array(a,b,k);
for(i=0;i<k;i++) {
printf("%d\t",b[i]);
}
printf("\n");
}