关于动态内存分配的问题
#include <stdio.h>#include <stdlib.h>
int compare_integers( void const*a,void const *b );
int main(int argc, char *argv[])
{
int *array;
int n_values;
int i;
printf("how many values are there?\n");
if( scanf("%d",&n_values)!=1||n_values<=0 ){
printf("Illegal number of values.\n");
exit(EXIT_FAILURE);
}
array=malloc(n_values*sizeof(int));
if( array=NULL ){
printf("Can't get memory for that many values.\n");
exit(EXIT_FAILURE);
}
for( i=0;i<n_values;i+=1 ){
printf("?\n");
if( scanf("%d",array+i)!=1 ){
printf("Error reading value #%d\n",i);
free(array);
exit(EXIT_FAILURE);
}
}
qsort( array ,n_values ,sizeof(int),compare_integers );
for( i=0;i<n_values;i+=1 )
printf("%d\n",array[i]);
free(array);
return EXIT_SUCCESS;
system("PAUSE");
return 0;
}
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;
}
上面是关于动态内存分配的问题,读取一列整数,并按升序排列它们,最后打印这个列表。
我运行后,输入一个整数之后就会出现错误,大家看看到底怎么回事啊!!
感谢!!!