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| #include <stdio.h> | |
| #include <string.h> | |
| #include <stdlib.h> | |
| #define MAX_STRING_LENGTH 101 | |
| typedef struct { | |
| char szerzo[101]; | |
| char cim[101]; | |
| unsigned kev; | |
| char tema[101] ; | |
| }rekord; | |
| int r_mod_kiir () { | |
| rekord r; | |
| int mod_szam; | |
| int sorszam = 1; | |
| int dontes_n; | |
| int keresett_szam = 0; | |
| int mod_par_szam; | |
| char mod_par[101]; | |
| FILE *be, *ki; | |
| be = fopen ("add.txt", "r"); | |
| if (!be) { | |
| fprintf(stderr, "Nem sikerult megnyitni a fajlt!\n"); | |
| return 1; | |
| } | |
| printf("\n"); | |
| printf("# Szerzo\tCim\tKiadasi ev\tTema\n\n"); | |
| while (fscanf(be, "%[^\t]\t%[^\t]\t%u\t%[^\n]\n", r.szerzo, r.cim, &r.kev, r.tema) != EOF) | |
| { | |
| printf("%d. %s\t%s\t%d\t%s\n", sorszam, r.szerzo, r.cim, r.kev, r.tema); | |
| sorszam++; | |
| } | |
| printf("\n"); | |
| printf("A modositani kivant elem sorszama: "); | |
| scanf("%d", &mod_szam); | |
| if (mod_szam < 1 || mod_szam > sorszam) { | |
| printf("Hibas sorszam"); | |
| printf("1. Uj sorszam megadasa\t2. Vissza a fomenube"); | |
| scanf("%d", &dontes_n); | |
| getchar(); | |
| switch(dontes_n) { | |
| case 1: | |
| printf("meghivjuk a sorszambekerestol"); //!!!!!! | |
| break; | |
| case 2: | |
| printf("fomenu kiirasa"); //!!!!!!!!! | |
| break; | |
| default: | |
| printf("Helytelen valasztas megihvjuk valahonnan"); //!!!!!!!!!!!!!! | |
| break; | |
| } | |
| } | |
| else | |
| { | |
| ki = fopen("ujadd.txt", "a"); | |
| if (!ki) { | |
| fprintf(stderr, "Nem sikerult megnyitni a fajlt!\n"); | |
| return 1; | |
| } | |
| rewind(be); | |
| while (fscanf(be, "%[^\t]\t%[^\t]\t%u\t%[^\n]\n", r.szerzo, r.cim, &r.kev, r.tema) != EOF) | |
| { | |
| keresett_szam++; | |
| if(keresett_szam == mod_szam) { | |
| printf("%s\t%s\t%u\t%s\n\n", r.szerzo, r.cim, r.kev, r.tema); | |
| printf("A modositani kivant parameter sorszama: \n"); | |
| printf("1. Szerzo 2. Cim 3. Kiadasi ev 4. Tema\t"); | |
| scanf("%d", &mod_par_szam); | |
| getchar(); | |
| switch(mod_par_szam) { | |
| case 1: | |
| printf("Az uj szerzo: "); | |
| fgets(mod_par, MAX_STRING_LENGTH, stdin); | |
| strcpy(r.szerzo, mod_par); | |
| break; | |
| case 2: | |
| printf("Az uj cim: "); | |
| fgets(mod_par, MAX_STRING_LENGTH, stdin); | |
| strcpy(r.cim, mod_par); | |
| break; | |
| case 3: | |
| printf("Az uj kiadasi ev: "); | |
| scanf("%u", &r.kev); | |
| getchar(); | |
| break; | |
| case 4: | |
| printf("Az uj tema: "); | |
| fgets(mod_par, MAX_STRING_LENGTH, stdin); | |
| strcpy(r.tema, mod_par); | |
| break; | |
| default: | |
| printf("Hibas sorszam valahonnan meghivni"); //!!!!!!!!!!! | |
| } | |
| fprintf (ki, "%s\t%s\t%u\t%s\n", r.szerzo, r.cim, r.kev, r.tema); | |
| } | |
| else | |
| { | |
| fprintf(ki, "%s\t%s\t%u\t%s\n", r.szerzo, r.cim, r.kev, r.tema); | |
| } | |
| } | |
| fclose(ki); | |
| } | |
| fclose(be); | |
| return 0; | |
| } | |
| int main () { | |
| r_mod_kiir(); | |
| return 0; | |
| } |
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