diff options
Diffstat (limited to 'issuemem.c')
| -rw-r--r-- | issuemem.c | 73 |
1 files changed, 70 insertions, 3 deletions
@@ -21,6 +21,7 @@ #include <stdio.h> #include <stdlib.h> +#include <string.h> #include "issue.h" @@ -32,7 +33,7 @@ void nogo_mem() exit(1); } -iss ** assignnew_iss(int *no_of_issues, iss ** issue) +iss ** assignnew_iss(iss ** issue, int *no_of_issues) /* assign memory for new issue */ { iss ** tmp = NULL; @@ -57,7 +58,7 @@ iss ** assignnew_iss(int *no_of_issues, iss ** issue) return tmp; } -sec ** assignnew_sec(int *no_of_sections, sec ** section) +sec ** assignnew_sec(sec ** section, int *no_of_sections) /* assign memory for new section */ { sec ** tmp = NULL; @@ -82,7 +83,7 @@ sec ** assignnew_sec(int *no_of_sections, sec ** section) return tmp; } -it ** assignnew_it(int * no_of_items, it ** item) +it ** assignnew_it(it ** item, int * no_of_items) { it ** tmp = NULL; @@ -105,3 +106,69 @@ it ** assignnew_it(int * no_of_items, it ** item) return tmp; } + +med ** assignnew_med(med ** media, int * no_of_media) +{ + med ** tmp = NULL; + + if(*no_of_media < 0) + { /* make **section a new array of section pointers */ + if( (tmp = malloc(sizeof(med *))) == NULL ) + nogo_mem(); + } + else + { /* add a new pointer to media pointer list */ + if( (tmp = realloc(media, sizeof(med *) + (((*no_of_media)+1) * sizeof(med *)))) == NULL ) + nogo_mem(); + } + + (*no_of_media)++; + + /* make new array item a pointer to issue */ + if( (tmp[*no_of_media] = malloc(sizeof(med))) == NULL ) + nogo_mem(); + + return tmp; +} + +int issuesort(iss ** issue, int no_of_issues) +/* does a basic bubble sort, by date, returning sorted issue */ +{ + int sortindex[no_of_issues]; + + int count1, count2, temp; + + for(count1 = 0; count1 <= no_of_issues; count1++) + sortindex[count1] = count1; + + /* find correct order of issues using a bubble sort */ + for(count1 = 0; count1 <=no_of_issues; count1++) + { + for(count2 = 0; count2 < no_of_issues; count2++) + { + if(issue[sortindex[count2]]->date.year < issue[sortindex[count2+1]]->date.year) + { + temp = sortindex[count2]; + sortindex[count2] = sortindex[count2+1]; + sortindex[count2+1] = temp; + } + else if((issue[sortindex[count2]]->date.year == issue[sortindex[count2+1]]->date.year) && + (issue[sortindex[count2]]->date.firstmonth < issue[sortindex[count2+1]]->date.firstmonth)) + { + temp = sortindex[count2]; + sortindex[count2] = sortindex[count2+1]; + sortindex[count2+1] = temp; + } + } + } + + iss * sortedissue[no_of_issues]; + + for(count1 = 0; count1 <= no_of_issues; count1++) + sortedissue[count1] = issue[sortindex[count1]]; + + for(count1 = 0; count1 <= no_of_issues; count1++) + issue[count1] = sortedissue[count1]; + + return 0; +} |