try strchr

afsk/main.c

@@ -409,8 +409,9 @@ i2c_bus3 = (test_i2c_bus(3) != -1) ? ON: OFF;
     char cmdbuffer1[1000];	
     FILE* file4 = popen("vcgencmd get_camera", "r");
     fgets(cmdbuffer1, 1000, file4);
-    printf("Camera result:%s pos: %s %s value: %d\n", &cmdbuffer1, &cmdbuffer1[10], &cmdbuffer[21], ((&cmdbuffer1[10] == "1") && (&cmdbuffer1[21] == "1")));
-    printf("String compare: %d \n", strcmp(cmdbuffer1, "supported=1 detected=1"));
+    printf("Camera result:%s pos: %s %s value: %d\n", &cmdbuffer1, &cmdbuffer1[10], &cmdbuffer1[21], ((&cmdbuffer1[10] == "1") && (&cmdbuffer1[21] == "1")));
+    char camera_present = "supported=1 detected=1";
+    printf("String compare: %d \n", (strchr(cmdbuffer1, camera_present)) != NULL);
 
     pclose(file4);