And described by traditional technology.

1. 1+2+3+ sum ... 100, described by the traditional flow chart, is:

1. Enter S= 1, n= 1.

2.n=n+ 1，S=S+n

3. Judge whether n = 100, and if so, go to 4.

If not, then: Go to 2.

4. Output the results

2. Convert to C language source program

# include & ltstdio.h & gt

void main()

{

int sum = 0；

int I = 1；

While (I<= 100)

{

sum+= i++；

}

Printf ("Result: %d", sum);

}