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純C/C++ sprintf/snprintf()函數 [類似C# String.Format 字串組合] 資料來源:https://openhome.cc/Gossip/CGossip/SscanfSnprintf.html http://www.cplusplus.com/reference/cstdio/snprintf/ 線上編譯器: https://www.tutorialspoint.com/compile_c_online.php code: #include int main(void) { char buf[80]; char buffer [100]; int cx; sprintf(buf, "%d %f %s %d %d %d %s", 25, 54.32E-1, "Thompson", 56, 789, 123, "56" );//起始指標位置,"字串格式",填入值 printf("%s\n", buf); cx = snprintf ( buffer, 100, "The half of %d is %d", 60, 60/2 ); //起始指標位置,可用記憶體長度,"字串格式",填入值 if (cx>=0 && cx<100)// check returned value { snprintf ( buffer+cx, 100-cx, ", and the half of that is %d.", 60/2/2 ); //起始指標位置,可用記憶體長度,"字串格式",填入值 } printf("%s\n", buffer); return 0; } /* 25 5.432000 Thompson 56 789 123 56 The half of 60 is 30, and the half of that is 15. */