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  1. #include <stdio.h>
  2.  
  3. int tansaku(int a[], int x){
  4.     int i = 0, idx = -1;
  5.     for(i = 0; a[i] != -1; i++){
  6.         if(a[i] == x){
  7.             idx = i;
  8.         }
  9.     }
  10.     return idx;
  11. }
  12.  
  13. int main(void){
  14.     int a[100], i, n, x, ret;
  15.     scanf("%d %d", &n, &x);
  16.     for(i = 0; i < n; i++) scanf("%d", &a[i]);
  17.     ret = tansaku(a, x);
  18.     printf("x : a[%d]\n", ret);
  19.     return 0;
  20. }
  21.  
Success #stdin #stdout 0.01s 5316KB
comments (?)
stdin
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12 3
2 3 5 8 3 3 2 4 -1 2 3 5
stdout
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x : a[5]
https://ideone.com/6pHBT1
language:
C (gcc 8.3)
created:
9 days ago
visibility:
public

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