GCC sports mining

1. The tip is to add the parameter FPIC when compiling, which is completely different from what you did< When the input file is. C,. Cxx,. CPP, etc., GCC compiles before linking
when the input file is. O, GCC only performs the linking step

the command line should be similar:
GCC - C - FPIC palindrome. C - O palindrome. O

2.

There are differences between the two, the main differences are: different nature, different role, different characteristics, as follows:

1, different nature

1, currency in circulation

currency in circulation, mainly refers to the legal tender issued by the state

Commemorative coins are legal tender issued by a country to commemorate international or national political, historical and cultural events, outstanding figures, places of interest, rare animals and plants, sports events, etc., including ordinary commemorative coins and precious metal commemorative coins

Second, it has different functions

2. Commemorative coins are used to commemorate a major festival or politics

Third, the characteristics are different.

1. Currency in circulation can be divided into currency in circulation and currency out of circulation. Although the currency or paper money that has been withdrawn from circulation has been withdrawn from circulation, in the legal sense, the currency that has been withdrawn from circulation is not invalid. It still belongs to legal circulation currency and is protected by law. It will not lose the status of circulation currency because of withdrawal from circulation. It is still an illegal act to forge or the notes that have been withdrawn from circulation

2. Commemorative currency

ordinary commemorative currency has the same function as the current circulating RMB, and is equivalent to RMB of the same denomination. But precious metal commemorative coins are not negotiable

3. Money is often used in daily life. Commemorative coins are collectibles and generally do not circulate. If you use them as money, you can only use them at face value. It is not cost-effective. Commemorative coins will appreciate over time.

4.

When it comes to coin collection, many novices are confused. There are too many kinds of coins. The more common ones are paper money, coins, commemorative coins, etc. which are more suitable for collection? After all, no one wants to collect worthless coins. Although it can not be said to be an investment, the more valuable the coins we collect, the happier we are. Today, let's make a brief analysis

1. The market of commemorative coins has always been characterized by rarity. The issue of commemorative currency is the primary factor to determine its investment value and appreciation potential. Generally speaking, the circulation of commemorative coins is inversely proportional to the market price. If you think about it, who will spend a lot of money to buy it. At present, most of the commemorative coins are of low collectable value

2. Paper money investment can be called" hard currency "in the collection field. In recent years, the rate of return on paper money investment is increasing by a considerable amount every year, which fully proves the potential of paper money investment. Nowadays, the stock market and gold market are in turmoil, and the property market is constantly "regulated". On the contrary, the coin collection market is rising steadily. As the only currency in circulation in China, RMB is printed and issued by the people's Bank of China, which has irreplaceable authority and value. RMB collection is considered to be one of the most stable and valuable varieties for investment. Among them, the fourth version of RMB has the most appreciation potential at present. After all, when the fourth version withdraws from the circulation field, it will be a new wave of market. This is also the main reason for the popularity of the fourth edition. Many people are looking forward to its early withdrawal from the circulation market

the fourth edition of RMB

3, coins

coin collection has always been a certain temptation, for most people, the threshold of coin collection is very low, although the appreciation speed of coin collection is not faster than that of other collections, However, if we collect coins with appreciation potential, it represents a steady stream of interests. Among them, the collection of five heavenly kings coins is the most brilliant one in the history of coin collection. Now a set of five heavenly kings can be sold for tens of thousands of yuan, which is enough to show that collecting coins is a good choice. PS: the "five heavenly kings" in the coin collection market are 5 fen in 1979, 2 fen and 5 fen in 1980, 1 Fen and 5 fen in 1981. The market price of this set has risen to more than 10000 yuan, and the market price of a single coin is also more than 1000 yuan

in Xiaobian's view, the appreciation potential of commemorative currency is less than that of paper money and coins. As for banknotes and coins, which one is better depends on your economic strength and preference. However, it's another matter if you have the bottom of the box. After all, many families have a pile of old coins that haven't been spent. I don't know which day it will be sent

5.

The operation of 1-2kg capacity Mini smelting furnace is shown in the figure: