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add every argument or return an error if argument is not a number in C

Kengo On answered on October 30, 2023 Popularity 1/10 Helpfulness 1/10

answer add every argument or return an error if argument is not a number in C

add every argument or return an error if argument is not a number in C

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#include <stdio.h>
#include <stdlib.h>
#include <limits.h>

int main(int argc, char *argv[]) {
    int sum = 0;

    for (int i = 1; i < argc; i++) {
        char *ptr;
        int num = strtol(argv[i], &ptr, 10);

        if (*ptr != '\0' || num <= 0 || num > INT_MAX - sum) {
            printf("Error\n");
            return 1;
        }

        sum += num;
    }

    printf("%d\n", argc > 1 ? sum : 0);
    return 0;
}

Popularity 1/10 Helpfulness 1/10 Language c

Source: chat.openai.com

Tags: add c return

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Contributed on Oct 30 2023

Kengo On

0 Answers Avg Quality 2/10

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add every argument or return an error if argument is not a number in C

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