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46 lines
868 B
46 lines
868 B
#include <stdio.h>
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#include <limits.h>
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#include <stdbool.h>
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int getNumber(char * s, bool *error);
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int main(void) {
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int first_operand;
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int second_operand;
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bool first_error;
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bool second_error;
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printf("This program computes moduli.\n");
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second_operand = getNumber("Enter an integer to serve as the second operand: ", &second_error);
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first_operand = getNumber("Now enter the first operand: ", &first_error);
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do {
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printf("%d %% %d is %d\n", first_operand, second_operand, first_operand % second_operand);
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first_operand = getNumber("Now enter the first operand (<= 0 to quit): ", &first_error);
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} while (!first_error && !second_error);
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return 0;
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}
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int getNumber(char * s, bool *error) {
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int number;
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*error = false;
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printf("%s", s);
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if (!scanf("%d", &number) || number < 0) {
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*error = true;
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}
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return number;
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}
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