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rickdragon

Tue Jan 20, 2004 7:57 am


Telephone Directory ( TurboC )

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/* proj_2.c - Telephone Directory */

		#include
		#include
		#include
		#include
		#include

		void add_num(void) , lookup(void);
		int menu(void);
		main()
		{
			char ch;
			do
			{ ch = menu();
			  switch(ch) {
			  case 'a' : add_num(); break;
			  case 'l' : lookup(); break ;
			  }
			} while ( ch != 'q');
		}
		// DISPLAY MENU & GET REQUEST
		menu(void)
		{
		char ch;
		do {
		printf(" (A)dd , (L)ookup , (Q)uit : ");
		ch = tolower(getche());
		printf("\n");
		} while(ch != 'q' && ch != 'a' && ch != 'l');
		return ch ;
		}

		// Add a name and number

		void add_num(void)
		{
			FILE *fp;
			char name[80];
			int a_code , exchg , num ;
			// open for append
			if((fp=fopen(" phone","a"))==NULL) {
				printf(" can not open file \n ");
				exit(1);
			}
			printf("Enter name and number ");
			fscanf(stdin, "%s %d %d %d ",name,&a_code,&exchg, &num);
			fscanf(stdin, "%*c"); // remove CR from input stream

			// write to file
			fprintf(fp,"%s %d %d %d \n",name,a_code,exchg,num);
			fclose(fp);
			}

			// find number given a name
			void lookup(void)
			{
				FILE *fp;
				char name[80], name2[80];
				int a_code , exchg , num ;
				// open for read
				if((fp = fopen("phone ","r"))==NULL) {
					printf("can not open a file \n");
					exit(1);
				}
				printf("name ..?");gets(name);
				// lookup for number
				while(!feof(fp)) {
				fscanf(fp, "%s %d %d %d ",name2,&a_code,&exchg, &num);
				if(!strcmp(name,name2)) {
					printf("%s : (%d) %d - %d \n ",name,a_code,exchg,num);
					break;
				}
			}
			fclose(fp);
		}