動態分配內存

#include<stdio.h> #include<stdlib.h>int compare_integers(void const *a,void const *b) {register int const *pa = a;register int const *pb = b;return *pa>*pb ? 1:*pa<*pb ? -1:0; }int main() {int *array;int n_value;int i;printf("How many values are there?\n");if(scanf("%d",&n_value)!=1 || n_value<0){printf("Illegal numbers of values.\n");exit(EXIT_FAILURE);}array = (int *)malloc(n_value*sizeof(int));if(NULL == array){printf("Cant get memery for that many values.\n");exit(EXIT_FAILURE);}for(i = 0;i<n_value;i++){printf("?");if(scanf("%d",array+i)!=1){printf("Error reading value #%d.\n",i);exit(EXIT_FAILURE);}}qsort(array,n_value,sizeof(int),compare_integers);for(i = 0;i<n_value;i++){printf("%d ",array[i]);}free(array);return EXIT_SUCCESS; }

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轉載于:https://www.cnblogs.com/plxx/p/3386116.html

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