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  1. #include <stdio.h>
  2.  
  3. int main(void) {
  4. 	 printf("Nhap vao so a: ");
  5.  
  6.      scanf("%d", &a);
  7.  
  8.  
  9.  
  10.      printf("Nhap vao so b: ");
  11.  
  12.      scanf("%d", &b);
  13. 	return 0;
  14. }
  15.  
Compilation error #stdin compilation error #stdout 0s 0KB
comments (?)
stdin
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Standard input is empty
compilation info 
prog.c: In function ‘main’:
prog.c:6:19: error: ‘a’ undeclared (first use in this function)
      scanf("%d", &a);
                   ^
prog.c:6:19: note: each undeclared identifier is reported only once for each function it appears in
prog.c:12:19: error: ‘b’ undeclared (first use in this function)
      scanf("%d", &b);
                   ^
stdout
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Standard output is empty
https://ideone.com/ygIr0y
language:
C (gcc 8.3)
created:
4 years ago
visibility:
public

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