[閒聊] struct vect

[PanJC ((#‵Д′)f〒﹌﹌﹌﹌﹌ꄩ]

#include <stdio.h>
#include <stdlib.h>

struct vect{
        int n;
        double *array;
};
void allocVect(struct vect *v1, int n);
void freeVect(struct vect *v1);
int setVect(struct vect *v1, int i, double value);
double getVect(struct vect *v1, int i);

int main(){
        struct vect v;
        int n = 10, i;
        allocVect(&v,n);
        for( i = 0 ; i < n+1 ; i++ ){
                setVect(&v,i,i*10.0);
                //v.array[i] = i*10.0;
                printf("v.array[%d] = %lf\n",i,getVect(&v,i));
        }
        freeVect(&v);
}

void allocVect(struct vect *v1, int n){
        v1->array = (double *) calloc(n, sizeof(double));
        v1->n = n;
}

void freeVect(struct vect *v1){
        free(v1->array);
}

int setVect(struct vect *v1, int i, double value){
        if( (i >= v1->n) || (i<0) ){
                printf("Index out of element range in Vector");
                return 0;
        }
        v1->array[i] = value;
        return 1;
}

double getVect(struct vect *v1, int i){
        if( (i >= v1->n) || (i<0) ){
                printf("Index out of element range in Vector");
                return 0;
        }
        return(v1->array[i]);
}

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