112 lines
2.4 KiB
C
112 lines
2.4 KiB
C
#ifndef STD_LIB_H
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#define STD_LIB_H
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#include<stdio.h>
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#include<stdlib.h>
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#include<string.h>
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#include<stdbool.h>
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#include<math.h>
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#include<time.h>
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#include<ctype.h>
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#include <stddef.h>
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#endif
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void welcome_message(){
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printf("><Welcome to the Student Union POS system><\n");//welcome messgae
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}
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int choices_selecter(char * Items[],int items,char * welcome_messages ){
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int choice = 0;
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do{
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system("cls");
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if (welcome_messages !=NULL){
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printf("%s",welcome_messages);
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}
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printf("Select An Option:\n");
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int i;
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for (i=0; i<items;i++){
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printf("%d. %s\n",i+1,Items[i]);
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}
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printf("%d. Exit\n",i+1);
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printf(">");
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fflush(stdin);
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scanf("%d",&choice);
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if(choice < 1 || choice > items+1){
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printf("Invalid choice...press any key to retry....\n");
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fflush(stdin);
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getchar();
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}
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}while(choice < 1 || choice > items+1);
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return choice;
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}
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char* prompt_item(char* prompt){
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char* item = malloc(sizeof(char) * 100);
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do{
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printf("%s",prompt);
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fflush(stdin);
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scanf("%[^\n]",item);
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if(strcmp(item,"") == 0){
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printf("Invalid input, try again?(y/n)\n");
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char temp[100];
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fflush(stdin);
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scanf("%[^\n]",temp);
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if(strcmp(temp,"n") == 0){
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return NULL;
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}
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}
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}while(strcmp(item,"") == 0);
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return item;
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}
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typedef enum{
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INT=1,STRING=2,LONG=3,FLOAT=4
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}INPUT_TYPE;
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bool item_inputer(char * varname,INPUT_TYPE type,void * item){
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char output[1024] = "Please input the ";
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strcat(output,varname);
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strcat(output,": \n>");
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char* temp = prompt_item(output);
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if(temp == NULL){
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return false;
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}
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switch(type){
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case INT:
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item = atoi(temp);
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break;
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case STRING:
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strcpy(item,temp);
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break;
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case LONG:
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item = atol(temp);
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break;
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case FLOAT:
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item = atof(temp);
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break;
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default:
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return false;
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}
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return true;
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}
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//check if strcasestr is define in current environment
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//if not, define it
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#ifndef HAVE_STRCASESTR
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char *strcasestr(const char *s, const char *find)
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{
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char c, sc;
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size_t len;
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if ((c = *find++) != 0) {
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c = tolower((unsigned char)c);
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len = strlen(find);
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do {
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do {
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if ((sc = *s++) == 0)
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return (NULL);
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} while ((char)tolower((unsigned char)sc) != c);
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} while (strncasecmp(s, find, len) != 0);
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s--;
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}
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return ((char *)s);
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}
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#endif
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