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  1. #include <stdio.h>
  2.  
  3. int square(int x);
  4.  
  5. int main(int argc, const char * argv[])
  6. {
  7.     printf("Enter a number");
  8.     int userNum;
  9.     scanf("%d", &userNum);
  10.     int result = square(userNum);
  11.     printf("\nThe result is %d", result);
  12.     return 0;
  13. }
  14.  
  15. int square(int x){
  16.     int result = x*x;
  17.     return result;
  18. }
Success #stdin #stdout 0s 2252KB
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stdin
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4
stdout
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Enter a number
The result is 16
https://ideone.com/H3Izqh
language:
C (gcc 8.3)
created:
11 years ago
visibility:
secret

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