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| Both sides previous revisionPrevious revisionNext revision | Previous revision | ||
| soft:c [2020/07/25 09:02] – [函数指针作为参数] Ce Zhang | soft:c [2020/11/05 02:10] (current) – Ce Zhang | ||
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| =====C++===== | =====C++===== | ||
| + | |||
| + | ==== 2D array ==== | ||
| + | < | ||
| + | TGraph*** g = new TGraph**[Nfile]; | ||
| + | for(i loop) g[i] = new TGraph*[t[i]-> | ||
| + | for(int j = 0; j< | ||
| + | </ | ||
| + | |||
| + | ====EOF==== | ||
| + | < | ||
| + | <<EOF //开始 | ||
| + | .... | ||
| + | EOF // | ||
| + | |||
| + | // | ||
| + | # cat fileA > fileB | ||
| + | // | ||
| + | # cat << EOF > fileB | ||
| + | // | ||
| + | </ | ||
| + | |||
| ====I/O==== | ====I/O==== | ||
| Line 71: | Line 92: | ||
| InsideAerogel | InsideAerogel | ||
| ); | ); | ||
| + | </ | ||
| + | |||
| + | ====char * 转换 (for input arg.)==== | ||
| + | < | ||
| + | //char* to int | ||
| + | |||
| + | int a = stoi(argv[1]); | ||
| + | |||
| + | //char* 转 float/ | ||
| + | float b = stof(argv[2]); | ||
| + | double bb = stod(argv[2]); | ||
| + | |||
| + | //char* 转 string (可以直接转） | ||
| + | string str = argv[3]; | ||
| + | cout << a << endl << b << endl << bb << endl << str << endl; | ||
| </ | </ | ||