#include<stdio.h>
#include <math.h>
int main()
{
    int i,l,n,j=0;
    scanf("%d",n);
    for(i=0;i<n;i++)
    {
        i=pow(10,i);
        l=i*2;
        j=l+j;
    }
    printf("%d",j);
    return 0;
}

出现
# Project: ch6t5
# Makefile created by Dev-C++ 5.11

CPP      = g++.exe
CC       = gcc.exe
WINDRES  = windres.exe
OBJ      = mainch6t5.o
LINKOBJ  = mainch6t5.o
LIBS     = -L"D:/Dev-Cpp/MinGW64/lib" -L"D:/Dev-Cpp/MinGW64/x86_64-w64-mingw32/lib" -static-libgcc
INCS     = -I"D:/Dev-Cpp/MinGW64/include" -I"D:/Dev-Cpp/MinGW64/x86_64-w64-mingw32/include" -I"D:/Dev-Cpp/MinGW64/lib/gcc/x86_64-w64-mingw32/4.9.2/include"
CXXINCS  = -I"D:/Dev-Cpp/MinGW64/include" -I"D:/Dev-Cpp/MinGW64/x86_64-w64-mingw32/include" -I"D:/Dev-Cpp/MinGW64/lib/gcc/x86_64-w64-mingw32/4.9.2/include" -I"D:/Dev-Cpp/MinGW64/lib/gcc/x86_64-w64-mingw32/4.9.2/include/c++"
BIN      = ch6t5.exe
CXXFLAGS = $(CXXINCS)
CFLAGS   = $(INCS)
RM       = rm.exe -f

.PHONY: all all-before all-after clean clean-custom

all: all-before $(BIN) all-after

clean: clean-custom
    ${RM} $(OBJ) $(BIN)

$(BIN): $(OBJ)
    $(CC) $(LINKOBJ) -o $(BIN) $(LIBS)

mainch6t5.o: mainch6t5.c
    $(CC) -c mainch6t5.c -o mainch6t5.o $(CFLAGS)
这是怎么了？有时候关机下一次启动后可以运行

这个加上还是出现那个东西

我刚刚把这些都删了用了最简单的输出，但还是出现这个