user-673ae0d4048222ae

include <stdio.h>

int main(void) { int lower, upper, step, celsium, kelvin; lower = 0; upper = 300; step = 20;

celsium = lower;

while(celsium <= upper) {
    kelvin = celsium + 273;
    printf("%d : %d\n", celsium, kelvin);

    celsium = celsium + step;
}

return 0;

}