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#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
typedef struct{
char pismeno;
unsigned int pocet;
}LETTER;
LETTER *countletters(char *path){
FILE *f;
f=fopen(path,"r");
if(f==NULL) return NULL;
char pism;
LETTER *rola;
int i;
rola= malloc(25*sizeof(LETTER));
rola[0].pismeno='a';
rola[1].pismeno='b';
rola[2].pismeno='c';
rola[3].pismeno='d';
rola[4].pismeno='e';
rola[5].pismeno='f';
rola[6].pismeno='g';
rola[7].pismeno='h';
rola[8].pismeno='i';
rola[9].pismeno='j';
rola[10].pismeno='k';
rola[11].pismeno='l';
rola[12].pismeno='m';
rola[13].pismeno='n';
rola[14].pismeno='o';
rola[15].pismeno='p';
rola[16].pismeno='q';
rola[17].pismeno='r';
rola[18].pismeno='s';
rola[19].pismeno='t';
rola[20].pismeno='u';
rola[21].pismeno='v';
rola[22].pismeno='x';
rola[23].pismeno='y';
rola[24].pismeno='z';
while( ( pism = fgetc(f) ) != EOF)
{
for (i=0;i<25;i++){
if (rola[i].pismeno==tolower(pism)) rola[i].pocet++;
}
}
return rola;
fclose(f);
}
void printletters(LETTER *counter){
int i;
for (i=0;i<25;i++){
printf("%c %d\n",counter[i].pismeno,counter[i].pocet);
}
}
int sort_letters(LETTER *counter)
{
int i ,x;
LETTER pp;
for (i=0;i<25;i++){
for (x=0;x<25;x++){
if (counter[x].pocet < counter[i].pocet)
{ pp=counter[x];
counter[x]=counter[i];
counter[i]=pp;
}
}
}
for (i=0;i<25;i++){
printf("%c %d\n",counter[i].pismeno,counter[i].pocet);
}
}
int main(int argc, char** argv) {
LETTER *counter =countletters("test.txt");
sort_letters(counter);
return (EXIT_SUCCESS);
}
#include <stdio.h>
#include <stdlib.h>
typedef struct{
int rok;
int day;
int speed;
int temperature;
}DATA;
void print(DATA *rola,int *n){
int i;
for(i=0;i<*n;i++){
printf("%d %d %2d %d\n",rola[i].rok,rola[i].day,rola[i].speed,rola[i].temperature);
}
}
void sort_temp(DATA *data, int *n){
printf("\n Sort to temperature\n");
printf(" ROK DAY SPEED TEMP\n");
int i,j;
DATA temp;
for(i=0;i<*n;i++){
for(j=0;j<*n;j++){
if(data[i].temperature<data[j].temperature){
temp=data[i];
data[i]=data[j];
data[j]=temp;
}
}
}
print(data,n);
}
void insert(DATA *data,int *n,int rok){ //podla daneho roku zmenime prislusny riadok hodnot
int i;
for(i=0;i<*n;i++){
if(data[i].rok==rok) { printf("\nZadaj hodnoty speed a temperature\n");
scanf("%d %d\n",&data[i].speed,&data[i].temperature);
}
}
}
DATA *rolaa(int *poc){
DATA *rola;
int i=0;
rola=(DATA *)malloc(20*sizeof(DATA));
FILE *f;
f=fopen("data.txt","r");
if(f==NULL) { printf("Subor sa nepodarilo otvorit\n"); return NULL; }
while(( fscanf(f,"%d%d%d%d",&rola[i].rok,&rola[i].day,&rola[i].speed,&rola[i].temperature))!=EOF){
i++;
}
*poc=i;
return rola;
}
int main(int argc, char** argv) {
int *poc; //premenna pocet riadkov naplni sa vo funkcii rolaa(poc));
DATA *rola;
rola=rolaa(poc);
if(rola==NULL) return EXIT_FAILURE;
print(rola,poc);
sort_temp(rola,poc);
int rok;
puts("\nZadaj rok\n");
scanf("%d",&rok);
insert(rola,poc,rok);
sort_temp(rola,poc);
free(rola);
return (EXIT_SUCCESS);
}
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