add find

3 files changed, 21 insertions, 0 deletions

diff --git a/libvector.c b/libvector.c
index 60e6e42..69537ab 100644
--- a/libvector.c
+++ b/libvector.c
@@ -119,3 +119,12 @@ void destroy_vec(vector_t *vec){
     free(vec->arr);
 }
 
+int find(vector_t vec, int value){
+    for (int i = 0; i < size(vec); i++){
+        if (at(vec, i) == value){
+            return i;
+        }
+    }
+    return -1;
+}
+
diff --git a/vector.h b/vector.h
index 078d56b..2dec5ec 100644
--- a/vector.h
+++ b/vector.h
@@ -21,5 +21,6 @@ void prepend(vector_t *vec, int value);
 int pop(vector_t *vec);
 void print_vec(vector_t vec);
 void destroy_vec(vector_t *vec);
+int find(vector_t vec, int value);
 
 #endif
diff --git a/vector_test.c b/vector_test.c
index 2bbe1d7..dcab29b 100644
--- a/vector_test.c
+++ b/vector_test.c
@@ -115,5 +115,16 @@ Test(vectortests, pop_test){
     cr_assert(pop(&vec)==3);
 }
 
+Test(vectortests, find_test){
+    push(&vec, 3);
+    push(&vec, 6);
+    push(&vec, 9);
+
+    cr_assert(find(vec, 9)==2);
+
+    cr_assert(find(vec, 99)==-1);
+
+}
+