soma de strings

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

int main() {
    char *num, *nam, *result;
    int carry = 0;

    num = (char*)malloc(100000000 * sizeof(char));
    nam = (char*)malloc(100000000 * sizeof(char));
    result = (char*)malloc(100000001 * sizeof(char));

    if (num == NULL || nam == NULL || result == NULL) {
        printf("alocação faiou\n");
        return 1;
    }

    printf("digite o primeiro numero: ");
    scanf(" %[^\n]s", num);
    printf("\ndigite o segundo numero: ");
    scanf(" %[^\n]s", nam);

    printf("\n\n%d\n%d\n\n", (int)strlen(num), (int)strlen(nam));

    int loopMax, loopMin;

    int len1 = strlen(num);
    int len2 = strlen(nam);

    loopMax = (len1 > len2) ? len1 : len2;
    loopMin = (len1 > len2) ? len2 : len1;

    for(int i = 0; i < loopMax; i++){
        int digit1 = (i < len1) ? num[len1 - i - 1] - '0' : 0;
        int digit2 = (i < len2) ? nam[len2 - i - 1] - '0' : 0;
        int sum = digit1 + digit2 + carry;

        carry = sum/10;
        result[i] = (sum%10) + '0';
    }

    if (carry > 0) {
        result[loopMax] = carry + '0';  // Add the final carry as the most significant digit
        result[loopMax + 1] = '\0';     // Null-terminate the result
    } else {
        result[loopMax] = '\0';         // Null-terminate the result
    }

    // Reverse the result
    int resultLen = strlen(result);
    for (int i = 0, j = resultLen - 1; i < j; i++, j--) {
        char temp = result[i];
        result[i] = result[j];
        result[j] = temp;
    }

    printf("\nResult: %s\n", result);

    free(num);
    free(nam);
    free(result);

    return(0);
}