环境为dev-cpp

日志如下：

编译器: Default compiler
执行 gcc.exe...
gcc.exe "E:\C\ran.c" -o "E:\C\ran.exe" -I"D:\Dev-Cpp\include" -L"D:\Dev-Cpp\lib"
C:\DOCUME~1\administrator\LOCALS~1\Temp/ccy6baaa.o(.text+0x2c1):ran.c: undefined reference to `prinf'
C:\DOCUME~1\administrator\LOCALS~1\Temp/ccy6baaa.o(.text+0x2f9):ran.c: undefined reference to `prinf'
C:\DOCUME~1\administrator\LOCALS~1\Temp/ccy6baaa.o(.text+0x334):ran.c: undefined reference to `prinf'
C:\DOCUME~1\administrator\LOCALS~1\Temp/ccy6baaa.o(.text+0x422):ran.c: undefined reference to `prinf'
C:\DOCUME~1\administrator\LOCALS~1\Temp/ccy6baaa.o(.text+0x45a):ran.c: undefined reference to `prinf'
C:\DOCUME~1\administrator\LOCALS~1\Temp/ccy6baaa.o(.text+0x495):ran.c: more undefined references to `prinf' follow
collect2: ld returned 1 exit status

执行结束

怎么回事？