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( ASCII-, 8 );
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double num = 1./3.;
fprintf(fp, %f, num);
// - : 0.333333
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| int fwrite (const char * array,size_t size,size_t count, FILE * stream); | . array . size . , . count . count. |
| int fread(void *ptr,size_t size,size_t count,FILE *stream); | . count size . , ptr. , . count . count. |
| do { act_read = fread(buffer, sizeof(char), BUF_NUM, fin); fwrite(buffer, sizeof(char), BUF_NUM, fout); } while (act_read == BSIZE); | |
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: malloc, calloc, free, realloc.
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void *malloc(size_t size);
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1 000 000 int` :
int * p = malloc(1000000*sizeof(int));
(, ), malloc 0.
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void free(void *ptr);
free , malloc. free malloc (, free(p+10)) . , malloc , (. .). free(p+10) (p+10) .
|
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void *calloc(size_t nmemb, size_t size);
malloc, ( ) , . ,
int * q = (int *) calloc(1000000, sizeof(int))
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void *realloc(void *ptr, size_t size);
( ptr, malloc, calloc realloc). size , , ptr, , . , size ptr .
