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// Ex21_1 Page:399 (2014)
clc;clear;
m_pi = 140; // Mass of a pion, MeV
m_p = 938.3; // Mass of a proton, MeV
m_K = 498; // Mass of a kaon, MeV
m_lambda = 1116; // Mass of lambda hyperon, MeV
Q = m_pi + m_p - m_K - m_lambda;
printf("\nThe Q-value of the reaction = %3d MeV", floor(Q));
// Result
// The Q-value of the reaction = -536 MeV
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