[問題] keil c 問題

看板ASM作者l634259 (mat)時間11年前 (2013/04/02 23:18)推噓3(3推 0噓 2→)

留言5則, 4人參與討論串1/1

*** WARNING L1: UNRESOLVED EXTERNAL SYMBOL SYMBOL: ?C_START MODULE: STARTUP.obj (?C_STARTUP) *** WARNING L2: REFERENCE MADE TO UNRESOLVED EXTERNAL SYMBOL: ?C_START MODULE: STARTUP.obj (?C_STARTUP) #include <reg51.h> sbit RA0 = P2^0; sbit RA1 = P2^1; sbit RA2 = P2^2; sbit RA3 = P2^3; sbit RA4 = P2^4; sbit RA5 = P2^5; sbit RC0 = P1^0; sbit RC1 = P1^1; int A; //===================== main() { RA0=1; RA1=1; RA2=1; RA3=1; RA4=1; RA5=1; RC0=0; RC1=0; while(1){ if(RA0==0 ) { A=1; } if(RA1==0 ) { A=2; } if(RA2==0 ) { A=3; } if( RA3==1 && RA4==1 && RA5==1&&A==1) {RC0=1; RC1=0; } if( RA3==1 && RA4==0 && RA5==1&&A==1) {RC0=0; RC1=1; } if(A==1 && RA3==0) {RC0=0; RC1=0; } if( RA4==1 && RA3==0 && RA5==1&&A==2) {RC0=0; RC1=1; } if(RA4==1 && RA4==1 && RA5==0&&A==2) {RC0=1; RC1=0; } if(RA1==1 && RA4==0) {RC0=0; RC1=0; } if( RA3==1 && RA4==0 && RA5==1&&A==3) {RC0=0; RC1=1; } if(RA2==1 && RA5==0) {RC0=0; RC1=0; } } } 為甚麼會出現2個警告程式哪出錯了?? -- ※ 發信站: 批踢踢實業坊(ptt.cc) ◆ From: 210.202.60.12

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