(1)按要求在提供的框架程序源程序的基础上对程序进行修改、补充,并调试通过。 (2)修改主程序结构,使程序可以反复运算,直到选择退出为止。 (3)增加文件的输入输出功能,是计算过的式子和结果可以根据需要设置命令存储到文件中,同时也可以直接从文件中输入四则运算的式子,运算后,结果输出到原文件中。 (4)扩充程序功...
1、 calculator #include <cs50.h> #include<stdio.h> int main(void) { // prompt user for x int x = get_int(“x: ”); int y =get_int(“y: ”); int z = x+y printf(“i%\n”, z); } 2、比大小 Conditionals、Boolean Expressions If不是函数,是C的feature。conditinals后面不跟se...
calculator which can do the four compound operations */ /* What's more, this programm didn't use the reverse polish expression which is commonly used in other projects, instead, it uses a brand new arithmetic.*/ /* Code maintenance on 2022/6/7: added sin, cos, tan and arcsin, arccos...
The special '.' symbol (called dot), represents the result of the last command expression, if any. This is of great use when a series of partial results are calculated, or when the output mode is changed and the last result needs to be redisplayed. For example, the above result can ...
Functions which only need to return a simple expression can be defined using an equals sign, as in the example: define sc(a,b) = a^3 + b^3 Thus the input: sc(31, 61) will produce: 256772 Variables in functions can be defined as either 'global', 'local', or 'static'. Global ...
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