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  1. # include <stdio.h>
  2. int main(void)
  3. {
  4. //(1)定义变量并初始化
  5. int a=3,b=2,c=1,d=0,e=0;
  6. char c1='a',c2='b';
  7. //(2)输出变量的值
  8. printf("a=%d,b=%d,c=%d,d=%d,e=%d\n",a,b,c,d,e);
  9. printf("c1='%c',c2='%c'\n",c1,c2);
  10. //(3)输出表达式的值:1为真,0为假
  11. printf("下列表达式的值:1为真,0为假\n");
  12. printf("逻辑表达式a&&b的值:%d\n",a&&b);
  13. printf("逻辑表达式c&&d的值:%d\n",c&&d);
  14. printf("逻辑表达式c1&&c2的值:%d\n",c1&&c2);
  15. printf("逻辑表达式d||e的值:%d\n",d||e);
  16. printf("逻辑表达式c1||c2的值:%d\n",c1||c2);
  17. printf("逻辑表达式!a的值:%d\n",!a);
  18. printf("逻辑表达式!d的值:%d\n",!d);
  19. printf("数学表达式c<b<a的值:%d\n",b>c&&b<a);
  20. return 0;
  21. {
Compilation error #stdin compilation error #stdout 0s 0KB
stdin
abCD AbCd
compilation info
prog.c: In function ‘main’:
prog.c:21:1: error: expected declaration or statement at end of input
 {
 ^
prog.c:21:1: error: expected declaration or statement at end of input
stdout
Standard output is empty