构造命题公式的真值表--biaobiao88

对给出的任意一个命题公式（不超过四个命题变元），使学生会用C语言的程序编程表示出来，并且能够计算它在各组真值指派下所应有的真值，画出其真值表。

#include<iostream> using namespace std; struct {     int p[4] = {1,1,0,0};     int q[4] = {1,0,1,0}; }m;  int main() {     cout << "  　 p：";     for(int i = 0;i < 4;i++)         cout << m.p[i] << "       ";     cout << endl;     cout << " 　  q：";     for(int i = 0;i < 4;i++)         cout << m.q[i] << "       ";     cout << endl;     //非p     cout << "　 非p：";     int copyp[4];     int k = 0;     int feip[k];     for(int i = 0;i < 4;i++)         copyp[i] = m.p[i];     for(int i = 0;i < 4;i++)     {         if(copyp[i] == 0)             copyp[i] = 1;         else             copyp[i] = 0;     }     for(int i = 0;i < 4;i++)     {         feip[i] = copyp[i];         cout << copyp[i] << "       ";      }     cout << endl;     //p交q     cout << "p合取q：";     for(int i = 0;i < 4;i++)     {         if(m.p[i] == 0 || m.q[i] == 0)             cout << 0 << "       ";         else             cout << 1 << "       ";      }     cout << endl;     //p并ｑ     cout << "p析取q：";     for(int i = 0;i < 4;i++)     {         if(m.p[i] == 1 || m.q[i] == 1)             cout << 1 << "       ";         else             cout << 0 << "       ";     }     cout << endl;     //p蕴含ｑ     cout << "p蕴含q：";     for(int i = 0;i < 4;i++)     {         if(feip[i] == 1 || m.q[i] == 1)             cout << 1 << "       ";         else             cout << 0 << "       ";     }     cout << endl;     //p当且仅当q     cout << "p等价q：";     for(int i = 0;i < 4;i++)     {         if((m.p[i] == 1 && m.q[i] == 1) || (m.p[i] == 0 && m.q[i] == 0))             cout << 1 << "       ";         else             cout << 0 << "       ";     }     cout << endl;     return 0; }

运行结果：

来源：博客园

作者：恶魔岛

链接：https://www.cnblogs.com/biaobiao88/p/11777719.html

标签

真值表

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