цикл с быстрой и медленной частями тела

dispatcher.c

#include <stdio.h>

int main() {
    int count = 0;
    
    while (1) {
        printf("fast\n");

        if (count == 49) {
            count = 0;
            printf("slow\n");
        }
        
        count++;
    }

    return 0;
}

dispatcher.py

count = 0

while True:
    print("fast")

    if count == 49:
        count = 0
        print("slow")

    count += 1

dispatcher.sh

#!/bin/bash

count=0

while true; do
    echo "fast"

    if (( count == 49 )); then
        count=0
        echo "slow"
    fi

    count=$(( count + 1 ))
done