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- // vypsat abecedu pouze pismena na lichych pozicich
- #include <stdio.h>
- #include <stdlib.h>
- /*
- int main()
- { int a;
- for (a=0; a<=9; ++a)
- putchar('0'+a);
- putchar('\n');
- for (a = 0;a<= 'Z' - 'A'; ++a)
- putchar('A' +a);
- putchar('\n');
- return 0;
- }
- //reseni y tabule / nahore dodelat
- int main(void){
- for (int i = 'a')
- }
- // program kde si uzivate lvyzada 2 * 3 cela kladna cisla / 2* pocet hodin, pocet minut, pocet sekund
- // program spocita roydil mezi casy, nevypsat zaporny rozdil, musi se yjistit kterz je vzssi hlidat spravne meye.
- // v prekroceni vzpsat chzbovou hlasku a skoncit. vzpsat ve formatu sekund a takz HH:MI:SS
- int main(void){
- int a, b, c, d, e, f;
- printf("Zadej 2 cisla v rozsahu 0-23\n");
- scanf("%d %d", &a, &d);
- if ( a<0 || a>=24){
- return 2;
- }
- if ( d<0 || d>=24){
- return 2;
- }
- printf("Zadej 2 cisla v rozsahu 0-59\n");
- scanf("%d %d", &b, &e);
- if ( b<0 || b>=60){
- return 2;
- }
- if ( e<0 || e>=60){
- return 2;
- }
- printf("Zadej 2 cisla v rozsahu 0-59\n");
- scanf("%d %d", &c, &f);
- if ( c<0 || c>=60){
- return 2;
- }
- if ( f<0 || f>=60){
- return 2;
- }
- int sec1 = a*3600 + b * 60 + c;
- int sec2 = d*3600 + e * 60 + f;
- int sec;
- if ( sec1>sec2 )
- sec = sec1-sec2;
- else
- sec = sec2-sec1;
- int hod = sec/3600;
- int min = (sec - hod*3600)/60;
- int secc = ( sec - hod*3600 - min*60);
- printf("Rozdil mezi casy je %d sekund \n", sec);
- printf("Rozdil mezi casy je %02d:%02d:%02d\n", hod, min, secc);
- return 0;
- }
- //kalkulacka
- int main(void){
- double a,b,vysl;
- char op;
- printf("Zadej cislo, operaci kterou chces provest a druhe cislo\n");
- while (scanf("%lf %c %lf", &a, &op, &b) != EOF){
- switch (op){
- case '+' : vysl = a + b; break;
- case '-' : vysl = a - b; break;
- case '/' : vysl = a / b; break;
- case '*' : vysl = a * b; break;
- default : printf("Spatny operator: %c\n", op);continue;
- }
- printf("%f %c %f = %f\n", a , op, b, vysl);
- }
- return 0;
- }
- //prepsat na kratsi
- int a;
- scanf("%d", &a);
- if (a > 0|| a<0){
- a=a+1;
- }
- a=a+1;
- if (a==7){
- a = a -3;
- }
- //zkracene
- int a;
- scanf("%d", &a);
- if (a)
- ++a;
- if (++a == 7)
- a -=3;
- */
- /* Deklarujte 4 ciselne promenne pojmenujte je a b c d
- a =5, b = 2, c = 5, d = 2,
- */
- /* program kde zadam pocet hvezdicek na diagonale ve ctverci minimalni diagonala 5 hvezdicek */
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