%p prints a pointer, %x prints an integer. They may be similar, but not the same. Eg.
printf ("ptr=%p int=%d\n", main, (int)main);
DOS: ptr=0F01:0010 int=10
Windows: ptr=:0F010010 int=F010010
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The temperature difference between -20°C and 40°C can be calculated by subtracting the lower temperature from the higher one. This gives us 40°C - (-20°C) = 40°C + 20°C = 60°C. Therefore, there are 60 degrees between -20°C and 40°C.
c=90 degrees s=180 degrees
transitive means for example, "if a=b and b=c, then a=c". reflexive means for example, "a=a, b=b, c=c, etc."
A syntax error is when you break the grammar rules of the language, such as forgetting to terminate a C++ statement with a semi-colon. A logical error is when your code does not perform as expected, typically due to an assumption that proves to be incorrect.