解释C语言中逻辑运算符和赋值运算符的概念

#include<stdio.h>
main (){
   float a=0.5,b=0.3,c=0.7;
   printf("%d</p><p>",(a<b)&&(b>c));//0//
   printf("%d</p><p>",(a>=b)&&(b<=c));//1//
   printf("%d</p><p>",(a==b)||(b==c));//0//
   printf("%d</p><p>",(b>=a)||(a==c));//0//
   printf("%d</p><p>",(b<=c)&&!(c>=a));//0//
   printf("%d</p><p>",!(b<=c)||(c>=a));//1//
}

0
1
0
0
0
1

#include<stdio.h>
int main(void){
   int i;
   char a='h';
   printf("enter the value of i:</p><p>");
   scanf("%d",&i);
   printf("print ASCII value of %c is %d</p><p>", a, a);
   a += 5;
   printf("print ASCII value of %c is %d</p><p>", a, a);
   a *= a + i;
   printf("a = %d</p><p>", a);
   a *= 3;
   printf("a = %d</p><p>", a);
   a /= 2;
   printf("a = %d</p><p>", a);
   a %= 4;
   printf("a = %d</p><p>", a);
   return 0;
}

enter the value of i:
3
print ASCII value of h is 104
print ASCII value of m is 109
a = -80
a = 16
a = 8
a = 0