pvjc23/du1/program.c

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#include <stdio.h>
int main(){
int c= 0;
int n=0; // pocet nacitanych znakov
while(1){
c = getchar();
if(c!=-1){ //-1 eof koniec vstupu
if( c >= 'a' && c <= 'z'){ //porovnavam cisla v ascii tabulke
c=c+'A'-'a'; //velke pismeno na male
}
else if(c >= 'A' && c <= 'Z'){
c=c-'A'+'a'; //male pismeno na velke
}
}
else{
break;
}
n++;
putchar(c);
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}
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printf('\n');
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printf("Pocet riadkov: %d\n", n/2); //vypise pocet zpouzitych znakov
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return 0;
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}