Because we need a C version

my_first_calc.c.py

MAX = 250
nums = range(MAX + 1)
signs = '+-*/'

if_template = '''
    if (a == {0} && b == '{1}' && c == {2})
        puts("{0} {1} {2} = {3}");
'''

main_template = '''
int main( int argc, char** argv) {
    if (argc != 4) {
        printf("Incorrect number of arguments, usage `calc <num> <sign> <num>`");
        exit(1);
    }
    int a = atoi(argv[1]);
    char b = *argv[2];
    int c = atoi(argv[3]);
'''


with open('calc.c', 'w+') as f:
    print('#include <stdio.h>', file=f)
    print('#include <stdlib.h>', file=f)
    print(main_template, file=f)
    for sign in signs:
        for num1 in nums:
            for num2 in nums:
                eq = f'{num1} {sign} {num2}'
                try:
                    ans = eval(eq)
                except ZeroDivisionError:
                    ans = 'Infinity'
                print(if_template.format(num1, sign, num2, ans), file=f)
    print('}', file=f)