53 lines
1.0 KiB
C
53 lines
1.0 KiB
C
// roll.c: A command line dice roller.
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#include <time.h>
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#include <stdio.h>
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#include <string.h>
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#include <stdlib.h>
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#include <unistd.h>
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typedef struct roll
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{
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unsigned diceSides;
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unsigned numberOfDice;
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} roll;
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roll parseRollString(char * rollString)
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{
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char * numberString, * sidesString, * currentPointer;
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currentPointer = rollString;
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numberString = strtok_r(rollString, "dD", ¤tPointer);
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sidesString = strtok_r(NULL, "dD", ¤tPointer);
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roll roll;
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roll.numberOfDice = (unsigned)atoi(numberString);
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roll.diceSides = (unsigned)atoi(sidesString);
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return roll;
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}
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int rollDice(roll roll)
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{
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int rolledValue = 0;
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for(unsigned rolls = 0; rolls < roll.numberOfDice; rolls++)
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{
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rolledValue += (rand() % roll.diceSides) + 1;
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}
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return rolledValue;
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}
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int main(int argc, char ** argv)
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{
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srand((unsigned)time(NULL) * getpid());
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roll roll;
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if(argc < 1)
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{
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roll = parseRollString(argv[1]);
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}
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else
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{
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roll.diceSides = 20;
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roll.numberOfDice = 1;
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}
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int result = rollDice(roll);
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printf("You rolled a: %d\n", result);
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return result;
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}
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